To find the right proposal !
Internship and thesis proposals
Criteria for selection
Number of proposals
117
1
Theoretical description of quantum electrodynamics in strong fields
Domaines
Quantum optics/Atomic physics/Laser
High energy physics
Metrology
Type of internship
Théorique, numérique Description
The focus of this internship is the improvement of theoretical methods to describe quantum electrodynamics (QED) in the vicinity of the Coulomb field created by an atomic nucleus with large nuclear charge number Z. In contrast to low-Z ions, the coupling of the quantum vacuum to the nucleus has to be described non-perturbatively in the high-Z regime because of the strong Coulomb field. This non-perturbative description creates additional challenges for theory compared to the perturbative regime, but is necessary to provide accurate theoretical predictions for many ongoing and future experiments that aim to test QED in strong fields. One of the main tasks will be adapting established methods for the description of electronic ions to exotic systems, where one or more electrons have been replaced by a heavier exotic particle, like a muon or an antiproton. Due to their higher mass, these particles orbit significantly closer to the nucleus than an electron in the same state and probe electric fields that are orders of magnitude larger. State-of-the-art experiments with exotic atoms, such as the PAX (antiProtonic Atom X-ray spectroscopy) experiment currently under development at LKB, can test the Standard Model in a regime that is otherwise inaccessible in a laboratory and need improved theoretical predictions to exploit their full potential as precision tests of strong-field QED.
Contact
Jonas Sommerfeldt
09/11/2026
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Thesis :
Funding :
2
Quantum error correction of time-frequency Gottesman-Kitaev-Preskill states
Domaines
Quantum optics/Atomic physics/Laser
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Type of internship
Théorique, numérique Description
Time-frequency is a promising degree of freedom for encoding and processing quantum information. In particular,
frequency is remarkably robust to linear optical processes, making it an attractive resource for high-dimensional
quantum information protocols. Although time and frequency are intrinsically continuous degrees of freedom, they
can be discretized to encode high-dimensional quantum states, or qudits, and further reduced to two-dimensional
subspaces to define qubits. One example is the time-frequency Gottesman-Kitaev-Preskill (GKP) state, in which a
qubit can be encoded in the even and odd components of a frequency comb generated by an entangled photon-pair
source. Such states are promising for applications in enhanced quantum metrology and quantum error correction.
They also exhibit strong mathematical similarities with bosonic GKP codes, while being physically distinct.
In this internship, we aim to investigate and adapt quantum error-correction protocols to entangled time-frequency
GKP states. A particular focus will be placed on realistic error sources, including incoherent errors arising from
detector timing jitter, as well as quantum channels that induce broadening in the time and frequency domains. The
goal will be to characterize the performance of error-correction protocols under these realistic noise processes and
determine the number of correction cycles required to preserve the quality of the encoded state for a given quantum
information protocol.
Contact
Nicolas Fabre
06/11/2026
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Thesis :
Funding :
3
Electrochemistry under vibrational coupling with plasmons
Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Recently, it was shown that chemical reaction rates can be modified by up to an order-of-magnitude by performing the reaction in a Fabry-Perot cavity tuned to the vibrational mode of one of the molecular species appearing along the reaction path. This remarkable observation, for which there is as yet no clear physical explanation, was made in the absence of any external photo-excitation. Inspired by this, we propose an internship and PhD project whose long-term goal is to study electrochemical reactions under vibrational strong coupling conditions. The intern will participate in, and contribute to, a series of experiments in which plasmonic metasurfaces will be fabricated using state-of-the-art lithography, then used as the working electrode in an electrochemical cell. Initial tests will target the study of text-book electrochemical reactions under external, mid-IR excitation, with the aim being to explore the effect of photon confinement at the electrode surface on reaction kinetics.
Contact
Alistair Rowe
06/11/2026
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Thesis :
Funding :
4
Finite-time optimal quantum sensors: engineering the Fisher information with cold atoms in modulated optical lattices
Domaines
Quantum information theory and quantum technologies
Quantum gases
Metrology
Type of internship
Expérimental et théorique Description
Atom interferometers rely on prescribed sequences (splitting, reflection, recombination), optimized step by step, whose precision improves by repeating measurements. This project asks a complementary question, crucial when interrogation time or the number of runs is limited: how much information can a single experimental cycle deliver? With a rubidium Bose–Einstein condensate in an optical lattice whose phase is modulated in real time, we recently showed that a modulation optimized from the Fisher information spontaneously builds an interferometer that reaches the quantum bound for force sensing in a fraction of a millisecond. The goal is now to identify what replaces the standard interferometric scheme when several parameters are measured simultaneously, such as the components of an acceleration, or an acceleration and a rotation. The quantity to optimize becomes a Fisher matrix, which encodes both the attainable precisions and the correlations between estimates. The project will first address force gradients, then two-dimensional vectorial sensing, comparing square and genuinely non-separable triangular lattices, and finally robustness against poorly known parameters and the role of atomic interactions. Combining experiment and numerical optimal control, it offers a complete training at the interface between cold atoms, quantum control and quantum metrology.
Contact
David Guéry-Odelin
06/11/2026
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Thesis :
Funding :
5
Quantum geometry and nonlinear transport in oxide two-dimensional electron gases
Domaines
Condensed matter
Nouveaux états électroniques de la matière corrélée
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
How does the geometry of an electron’s wavefunction determine electrical transport? Beyond band energies and scattering, the evolution of electronic states in momentum space is described by Berry curvature and the quantum metric. These quantities can generate nonlinear electrical responses, but their signatures remain underexplored at oxide interfaces.
This internship will investigate quantum-geometric transport in two-dimensional electron gases based on SrTiO₃ and KTaO₃. Their orbital mixing and spin-orbit coupling provide opportunities to tune quantum geometry via crystal orientation, electrostatic gating and magnetic fields.
The student will perform low-temperature transport measurements, recording longitudinal and Hall voltages at the first, second and third harmonics of an applied current. By varying gate voltage, temperature and magnetic-field orientation, they will analyse the symmetry and scaling of nonlinear signals to distinguish possible quantum-geometric contributions from scattering and thermal effects. Tight-binding modelling will help connect the measurements to the electronic structure.
The internship will take place at Laboratoire Albert Fert in Palaiseau, supervised by Manuel Bibes, Agnès Barthélémy and Hugo Witt, with the possibility of continuing towards a PhD.
Contact
Manuel Bibes
06/11/2026
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Thesis :
Funding :
6
A new optical collection system to enhance ion–photon entanglement
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Metrology
Type of internship
Expérimental Description
Recent advances in quantum physics have given rise to cutting-edge fields such as quantum computing, quantum simulation, and quantum communication, driving the rapid development of quantum technologies. Our research team has strong experience with two complementary quantum platforms: laser-cooled trapped strontium ions and single photons generated by spontaneous parametric down-conversion (SPDC) in semiconductor chips. Using deep learning, we have recently designed a new source of such photons, whose pairs combine a photon at 1092 nm, matching a transition of the 88Sr+ ion, with a telecom photon at 1550 nm.
This internship proposal is at the intersection of these two areas, with the goal of developing a hybrid quantum platform. The project addresses one of the key challenges in quantum communication networks: creating a seamless connection between static qubits (trapped ions) and flying qubits (single photons).
Contact
Valentin Cambier
05/11/2026
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Thesis :
Funding :
7
Master’s Internship – Fiber-Integrated Quantum Light Sources
Domaines
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Efficiently interfacing quantum emitters with optical fibers is a key challenge for quantum technologies. Coupling a single emitter to a one-dimensional waveguide enables efficient single photon sources and/or strong light-matter interactions at the single-photon level. Our group develops hybrid interfaces combining solid-state quantum emitters and tapered optical nanofibers: ultrathin fibers (~300 nm diameter, >98% transmission) that collect photons directly into a guided mode, offering a compact, low-loss, fiber-compatible platform.
We are looking for someome to contribute to the development of a fully fiber-integrated quantum light source based on single quantum emitters. Depending on their interests, the project may focus on: enhancing emitter-waveguide coupling with hybrid photonic-plasmonic structures on nanofibers; characterizing single-photon emitters, including at cryogenic temperatures; quantum nonlinear optics and photon correlations in 1D waveguides; or nanoscale sensing (Raman spectroscopy, magnetic fields) with nanofiber evanescent fields.
The student will receive hands-on training in experimental quantum optics: optical setups, nanofiber fabrication, spectroscopy, single-photon measurements, data analysis and simulations.
We seek M2 students in physics, quantum optics, photonics or nanoscience with experience in experimental optics; Python or FDTD skills are a plus. The internship can lead to a PhD in our group.
Contact
Hanna Le Jeannic
04/11/2026
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Thesis :
Funding :
8
Resistively shunted Josephson junctions in the quantum regime
Domaines
Condensed matter
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental Description
A Josephson junction is a non-linear superconducting device. Under certain conditions the junction behaves quantum mechanically (Nobel Prize in Physics, 2025), and is strongly influenced by the electrical circuit in which it is embedded. The student will measure DC electronic properties of Josephson junctions in the quantum regime. Preliminary data indicates that a large bias resistor can make the junction insulating instead of superconducting. The goal of the internship is to determine the phase diagram for this transition as a function of the junction size.
Contact
Çağlar Girit
04/11/2026
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Thesis :
Funding :
9
Ultracold neutral plasma physics
Domaines
Quantum optics/Atomic physics/Laser
Kinetic theory ; Diffusion ; Long-range interacting systems
Type of internship
Expérimental Description
This internship offer is at the frontier of atomic, quantum and plasma physics. The student will take part in optimizing and characterizing the production of laser-cooled atomic clouds with temperatures in the mK range, in a new experiment aiming at creating an ultracold neutral plasma to study its dynamics.
Contact
Romain Dubessy
03/11/2026
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Thesis :
Funding :
10
Quantum Algorithms for the Many-Body Problem on Silicon Spin Qubits
Domaines
Condensed matter
Quantum information theory and quantum technologies
Type of internship
Théorique, numérique Corporate activity
Description
Context: Simulating interacting electrons, the quantum many-body problem, is one of the most promising applications of quantum computers, with potential impact on materials science and quantum chemistry. Running such algorithms on real hardware raises specific challenges: noise, limited connectivity and native gate sets all depend on the qubit technology. Quobly develops quantum processors based on silicon spin qubits and has released SpinPulse, a library for transpilation and noise-accurate simulation of spin qubit quantum computers. The goal is to implement a quantum algorithm for a small many-body problem and evaluate how it performs under realistic spin qubit noise.
Contact
Matthieu Saubanere
03/11/2026
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Thesis :
Funding :
11
Co-design of magic state factories
Domaines
Quantum information theory and quantum technologies
Type of internship
Théorique, numérique Corporate activity
Description
In a context where magic state preparation dominates the space-time cost of fault-tolerant quantum algorithms, recent advances have substantially widened the factory design space: batched protocols producing several magic states per run, compact protocols leveraging qubit recycling, and "unfolded" distillation performed at the physical rather than the logical level, which exploits the noise bias of cat qubits. Because the repetition codes underlying Alice & Bob's architecture do not natively give access to the full Clifford group, the architecture must also distill Clifford resource states in addition to non-Clifford magic states. Selecting the best factory is a highly multi-parameter optimisation problem, coupling spatial and temporal code distances, single- versus multi-output protocols, the degree of parallelism of the distillation circuit, the magic state injection scheme, the factory layout, and hardware connectivity constraints. The goal of this internship is to navigate this design space and identify the most resource-efficient factories for Alice & Bob's architecture, focusing first on magic state factories and possibly extending the resulting tools to Clifford state factories.
Contact
Élie Gouzien
03/11/2026
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Thesis :
Funding :
12
Shaping quantum light with disordered nonlinear nanomaterials
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Statistical physics
Biophysics
Soft matter
Nouveaux états électroniques de la matière corrélée
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Non-classical light, such as correlated photon pairs, is the key resource behind emerging quantum technologies, yet today’s sources rely on carefully engineered nonlinear crystals that operate at a single wavelength and are hard to miniaturise. We have pioneered wavefront shaping to control light in complex media, and are now developing disordered nonlinear assemblies. The project aims at turning the randomness of such materials into a resource, programming them with wavefront shaping to behave as compact and tunable sources of quantum light, for instance through photon-pair generation or Stokes/anti-Stokes correlated emission. The work is mainly experimental, combining ultrafast lasers, spatial light modulators and single-photon coincidence detection, and could be followed by a PhD.
Contact
Hilton Barbosa de Aguiar
02/11/2026
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Thesis :
Funding :
13
Molecular vibrations as room-temperature quantum oscillators
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
This internship will be devoted to control the vibrational sate of molecules using optical resonators down to the quantum level. The vibration of millions of molecules deposited on the surface of microring resonator will be synchronized through the optical resonance, and their movement will be amplified until the observation of phonon lasing. The internship will include nanofabrication, experimental setting up and optical measurements.
Contact
Ilan Shlesinger
02/11/2026
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Thesis :
Funding :
14
Surface Plasmon Thermalization and Condensation in 1D
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Low dimension physics
Nonequilibrium statistical physics
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Non-equilibrium Statistical Physics
Quantum gases
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
The internship aims to study photon Bose-Einstein condensation (BEC), a phenomenon in which an active medium mediates the interaction between photonic modes in order to thermalize their population, and generate a condensed fraction. This phenomenon is out-of-equilibrium: an optical pump continuously generates excitations to compensate for the losses. The photon condensates studied to date are 2D systems. The project implements a 1D system by using electromagnetic modes which are guided at the interface between a dielectric and a metal, surface plasmons. By confining these modes within a plasmonic Fabry–Perot cavity, one obtains paraxial modes in one dimension, in which fluctuations and interactions become particularly important due to the reduced dimensionality. The internship project aims to study the mechanisms by which thermalization and condensation occur within this system, and will involve an experimental study of the gas's thermodynamic properties and spatial correlations.
Contact
Marin Tharrault
02/11/2026
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Thesis :
Funding :
15
POLARIZATION-RESOLVED 3D HOLOGRAPHIC IMAGING OF SECOND-HARMONIC GENERATION
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Biophysics
Quantum optics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Metrology
Type of internship
Expérimental Description
This project aims at characterizing second-harmonic generation (SHG) emitted by various samples with a single-shot and three dimensional (3D) measuring technique called holography. Through the measurement of the field’s phase and amplitude, algorithmic propagation allows to retrieve the full radiation pattern from objects such as plasmonic nonlinear nanoantennas, including plasmonic, dielectric, and hybrid nanostructures, or such as biological samples that exhibit strong nonlinear responses. Combined with polarization multiplexing, the system will simultaneously record multiple polarization components and reconstruct numerically their individual 3D distributions in real space.
The project will be carried out as part of a collaboration between Institut Langevin (ESPCI Paris, PSL University) and Institut de la Vision.
Keywords : Holography, Second-Harmonic Generation, Nonlinear Optics, Interferometry, Polarization, Plasmonics, Nanophotonics, Biology Imaging
Description of the work : 50% experimental, 50% numerical/processing (to be discussed)
Contact
Yannick DE WILDE
Laboratory : Institut Langevin - Ondes et Images - UMR7587
Team : Materials, Resonances, Interfaces
Team Website
Team : Materials, Resonances, Interfaces
Team Website
01/11/2026
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Thesis :
Funding :
16
INFRARED TOMOGRAPHY FOR THE INVESTIGATION OF STRATEGIC MATERIALS FOR THE AVIATION AND SPACE INDUSTRIES
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Metrology
Type of internship
Expérimental Description
By integrating a mid-wave or long-wave infrared (MWIR/LWIR) camera, similar to those used in thermal imaging, into an interferometric setup combined with a broadband infrared source, we aim to achieve deep imaging through diffusive and/or opaque layers such as paints, coatings, plastics, ceramics, or aged varnishes.
Full-Field OCT (FF-OCT) remains largely unexplored in the mid-IR range. This project will therefore address both fundamental questions on infrared light propagation in complex scattering media and applied challenges in several fields. This internship/PhD thesis offers an opportunity to contribute to the development of a new generation of infrared interferometric imaging tools, expanding the reach of OCT beyond its traditional spectral limits. Anticipated applications include :
– Non-destructive testing, particularly for detecting subsurface defects in industrial coatings used in aerospace and advanced manufacturing.
– Cultural heritage analysis, enabling visualization beneath painted surfaces and ceramic glazes.
It will be carried out as part of a collaboration between Institut Langevin (ESPCI Paris, PSL University) and ONERA.
Contact
Yannick DE WILDE
Laboratory : Institut Langevin - Ondes et Images - UMR7587
Team : Materials, Resonances, Interfaces
Team Website
Team : Materials, Resonances, Interfaces
Team Website
01/11/2026
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Thesis :
Funding :
17
ENGINEERING THERMAL RADIATION BEYOND PLANCK’S LAW FOR ACTIVE CONTROL OF NEAR-FIELD RADIATIVE HEAT TRANSFER: TOWARDS RADIATIVE THERMOTRONICS
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Metrology
Type of internship
Expérimental Description
The ability to control electric currents in solids laid the foundations of the modern electronics revolution, which has transformed our daily lives since the second half of the 20th century. Surprisingly, no comparable technology has yet emerged for the active control of heat flows. This project aims to develop the first building blocks of radiative thermotronics, enabling active control of radiative heat transfer. Building on a recently developed experimental platform designed to investigate many-body radiative heat transfer, we will exploit the metal–insulator phase transition of vanadium dioxide (VO₂) to actively modulate heat exchange between bodies interacting in the near field.
The project will be carried out as part of a collaboration between Institut Langevin (Yannick De Wilde, ESPCI Paris, PSL University) and Laboratoire Charles Fabry – IOGS (Philippe Ben-Abdallah and Riccardo Messina).
Keywords :Thermal radiation managment, Near-field radiative heat transfer, Many Body Physics, Phase change materials, Near-field optics, Surface waves, Nanosciences, Thermotronics
Description of the work : Experiments and electromagnetic simulations of radiative heat transfer
Contact
Yannick DE WILDE
Laboratory : Institut Langevin - Ondes et Images - UMR7587
Team : Materials, Resonances, Interfaces
Team Website
Team : Materials, Resonances, Interfaces
Team Website
01/11/2026
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Thesis :
Funding :
18
Spin mixtures of a strongly magnetic quantum gas
Domaines
Quantum gases
Type of internship
Expérimental Description
Dysprosium, one of the most magnetic atoms in the periodic table, forms unusual states of matter at ultralow temperatures, such as quantum droplets and supersolids. So far, these experiments have been limited to a single spin state, because dipolar relaxation destroys mixtures. Using spin-dependent light shifts, our team has recently produced the first long-lived mixtures of the |−8⟩ and |+8⟩ states of ¹⁶²Dy, whose magnetic moments are exactly antiparallel. Theory predicts that such a mixture forms a self-bound crystal of alternating magnetic domains, held together by their dipolar attraction, much like an ionic crystal. This internship, followed by a PhD thesis, will focus on spin-dependent imaging, the measurement of the scattering length between |−8⟩ and |+8⟩, and the cooling of potassium. Potassium, which interacts differently with the two spin states, should act back on this crystal. Moreover, it will open up other directions, such as the stabilization of Efimov trimers a long-term goal of this experiment.
Contact
Raphael Lopes
01/11/2026
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Thesis :
Funding :
19
Hydrodynamique à deux fluides dans un gaz de fermions 2D
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Low dimension physics
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Kinetic theory ; Diffusion ; Long-range interacting systems
Quantum gases
Type of internship
Théorique, numérique Description
Le projet de ce stage théorique est d'étudier le comportement hydrodynamique d'un gaz de fermions 2D, tel qu'on sait en préparer avec des atomes ultrafroids. Dans sa phase superfluide, le gaz obéit à l'hydrodynamique à deux fluides, théorie qui couple le fluide normal (décrit par une équation de Boltzmann) à la phase du condensat (le champ de jauge associé à la brisure de symétrie U(1)). L'hydrodynamique à deux fluides prédit un second son correspondant aux excitations de la vitesse relative du superfluide et du fluide normal. La vitesse et l'amortissement de ce second son sont en cours de mesure à Hambourg dans un gaz de Lithium 6 en forme de galette (cf. arXiv:1704.06315). L'amortissement dépend d'une viscosité de phase, différente de la viscosité de cisaillement de la phase normale, et pour laquelle on ne dispose d'aucune prédiction à 2D.
On utilisera la théorie des liquides de fermions pour calculer la viscosité de phase en fonction de la force des interactions. Comme tous les coefficients de transport, la viscosité de phase est déterminée par les collisions entre quasiparticules fermionique. Pour décrire ces collisions, le ou la stagiaire pourra s'appuyer sur les travaux de l'équipe à 3D (cf. arXiv:2502.03423), mais devra prendre en compte les spécificités du cas 2D, notamment la prédominance des collisions frontales.
Contact
Hadrien Kurkjian
30/10/2026
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Thesis :
Funding :
20
Collective resonance of a nano-antennas lattice
Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
Under electromagnetic excitation, metal nano-objects can support collective electron oscillations, known as plasmon waves . When illuminated with white light, a resonance (Localised Surface Plasmon Resonance, LSPR) whose center and width, typically a few tens of nanometres, depend on the dielectric constant of the metal, the shape of the nanoparticle and on the dielectric environment of the nanoparticle. This property makes it possible to create sensitive sensors based on the detection of LSPR resonance shifts when the nanoparticle's environment changes. However, the sensitivity of these sensors is limited by the width of the LSPR resonance. To increase sensitivity, these nanoparticles can be positioned as a lattice on a substrate. Given the periodicity of this arrangement, the first order diffraction of incident light at a given wavelength can propagate in the plane of the array resulting in a much thinner resonance used to increase the sensitivity of the sensor. This resonance is called Surface Lattice Resonance (SLR).
As part of this internship, we will fabricate arrays of gold nanoparticles above a gold mirrors, enabling us to observe collective resonance of such antennas lattice. We will characterize them optically and optimize the parameters to maximize the signal and its spectral finesse. In a second step, we will deposit CdSe/CdS quantum dots that resonate or do not resonate with the SLR modes, and study how their emission is modified by the resonance
Contact
Agnes MAITRE
29/10/2026
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Thesis :
Funding :
21
Couplage fort pour une boîte quantique dans une nano-antenne plasmonique
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
CdSe/CdS core/shell quantum dots are excellent bright nano-emitters. At room temperature, under low excitation power they behave as high quantum efficiency single photon source thanks to efficient Auger processes leading to the recombination of a single exciton. They can be analysed as a simple two-level system. However, by increasing the excitation power, emission spectrum broadens dramatically. The two- levels system paradigm fails for interpreting those features. We have developed a model based on the radiative recombination of multiple excitonic levels within a single nanocrystal , relying on statistical description of electron and hole populations in a quasi-equilibrium and Bayesian analysis.
Patch plasmonic nanoantennas consist of a thin dielectric medium sandwiched between a thick gold layer and gold patch.We have demonstrated that for a quantum dot inside such antenna, the absorption cross section is increased by 3 order of magnitude. Therefore such an antenna/ quantum dot system is a good candidate for achieving strong coupling.
During the internship, the student will start developing bright optical nanosources by coupling nanoemitters to plasmonic antennas. He/she will fabricate then and study by confocal optical microscopy the fluorescence ( emission rate and spectrum, directivity,…). The final objective is to achieve the regime of strong coupling regime. Thanks to a high confinement and excitation, the emitters should gain specific original quantum properties.
Contact
Agnes MAITRE
29/10/2026
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Thesis :
Funding :
22
Excitonic whispering gallery mode laser in high pumping regime
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
In nanophotonics and quantum technologies, photon sources are a ressource which can be integrated into a chip. Cylindrical dielectric microdisks make excellent resonators in which optical gallery modes can propagate at the air/dielectric interface.
Using optical lithography, we have fabricated gallery-mode resonators on which we have deposited fluorescent nano-emitters, colloidal quantum dots. These are CdS/CdSe/CdS semiconductors in a spherical core/shell/shell configuration. Of nanometric dimensions, their fluorescence wavelength depends on their size. They can emit single photons, are resistant to photobleaching and are bright under strong excitation. We have deposited these quantum dots in high concentration on microdisks, in order to achieve a sufficient gain. We were therefore able to create gallery modes excitonic microlasers.
The aim of this internship will be to study these gallery-mode lasers, as a function of their size, shape or when two cavities are coupled. In particular, we will be interested in the behavior of these lasers far from the threshold, when the excitation laser is intense. Under these conditions, the resonant gallery mode intensity is high. If its coupling to the excitons is sufficiently strong, emission will be modified by exciton-photon interaction. We will study these strong coupling configurations in relation to theoretical predictions.
Contact
Agnes MAITRE
29/10/2026
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Thesis :
Funding :
23
Towards Ultra-Efficient, Red-Emitting III-Nitride LEDs
Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
III-nitride light-emitting diodes (LEDs) are key devices for next-generation solid-state lighting and micro-LED displays. Achieving efficient emission at long wavelengths, particularly in the red spectral range, remains a major challenge. Using a novel experimental approach (STLM) that combines optical spectroscopy with the spatial resolution of scanning tunneling microscopy, we recently revealed how the inclusion of so-called V-defects can result in improved LED efficiencies. Unfortunately, V-defects form naturally at threading dislocations and are therefore randomly distributed, limiting the control that can be achieved over the resulting device architecture.
In the framework of a multi-partner, ANR-funded project, we propose a new approach based on III-nitride LEDs grown on intentionally macro-structured substrates. We propose an internship (then funded PhD) project in which the candidate will have the responsibility of performing STLM measurements on macro-structured LEDs fabricated by our colleagues as part of a fully-funded ANR project. The principal objective of the work will be to establish a fundamental understanding of charge injection, transport and recombination in these operational, macro-structured LEDs.
Contact
Alistair Rowe
29/10/2026
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Thesis :
Funding :
24
Collective modes and pair-density-wave superconductivity in 2H-NbSe2
Domaines
Condensed matter
Statistical physics
Nouveaux états électroniques de la matière corrélée
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Non-linear optics
Type of internship
Théorique, numérique Description
The Higgs mode in a superconductor is a collective oscillation of the amplitude of its superconducting order parameter. In 2H-NbSe₂, where superconductivity coexists with charge-density-wave order, Raman spectroscopy reveals a peak commonly attributed to this mode. Yet its observation in the E₂g symmetry channel remains difficult to explain.
Could this signal reveal pair-density-wave superconductivity, an unconventional state in which Cooper pairs carry finite momentum? This Master’s internship will explore this possibility through analytical calculations and numerical modelling. You will develop a microscopic model, investigate its symmetries and collective excitations, and calculate Raman spectra for comparison with experiments.
The project offers an opportunity to develop skills in many-body theory and superconductivity while tackling an open question connecting fundamental physics with experimental observations. The internship will take place at the Max Planck Institute for Solid State Research in Stuttgart, Germany.
Contact
Dirk Manske
28/10/2026
/
Thesis :
Funding :
25
Single-photon detectors based on High Tc superconductors
Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Single-photon detection is essential for quantum technologies, including secure communications. While superconducting nanowire detectors are well established in the near-infrared, extending their operation to the mid-infrared (MIR) and terahertz (THz) ranges remains challenging. High-critical-temperature superconductors such as YBCO (Tc = 85 K) offer promising prospects for more accessible and broadband detectors. However, rapid heat dissipation into the substrate prevents efficient hotspot formation and single-photon detection. Suspended YBCO nanowires, recently developed at Thales, could overcome this limitation.
This joint Master 2/PhD project, involving Thales, LPEM and LPENS and funded by the French ANR (BRIGHT project), aims to investigate and control the vibrational properties of suspended YBCO bridges to understand and optimize heat transfer. Together with LPENS, we will develop an experimental setup to probe the mechanical vibrations of nanoscale objects. The Master 2 internship will implement the setup at room temperature using available semiconductor cantilevers. Electrostatic actuation will enable the exploration of nonlinear mechanical vibrations and photothermal effects. The subsequent PhD will focus on systematic studies of YBCO bridges provided by Thales, extending the setup to cryogenic temperatures for in-operando characterization.
Candidates should have strong experimental skills.
Contact
Yanko Todorov
28/10/2026
/
Thesis :
Funding :
26
Mathematics of Majorana fermions
Domaines
Condensed matter
Low dimension physics
Nouveaux états électroniques de la matière corrélée
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Théorique, numérique Description
! Internship in a laboratory of mathematics !
How can quantum information be preserved in a system with thermal excitations? In certain fermionic chains, Majorana modes localized at the ends provide boundary degrees of freedom that can retain information for very long times. The internship will investigate the mathematical mechanisms underlying this dynamical stability at nonzero temperature, through the study of strong zero modes and their prethermal counterparts
Contact
Louis Garrigue
Laboratory : AGM, analysis geometry modelisation - UMR CNRS 8088
Team : AGM : team of mathematical physics
Team Website
Team : AGM : team of mathematical physics
Team Website
28/10/2026
/
Thesis :
Funding :
27
Théorie de la correction d’erreur quantique dans un ensemble d’oscillateurs harmoniques
Domaines
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Théorique, numérique Description
Un des plus grands défis technologiques des dernières décennies est de construire un ordinateur
quantique. Ce type d’ordinateur promet de révolutionner plusieurs domaines comme la chimie,
l’apprentissage machine et la cryptographie. Cependant, un des défis majeurs à surmonter est de
combattre la décohérence qui efface l’information quantique et limite les capacités de calcul. La correction d’erreur quantique permet, en principe, de résoudre ce problème. Une approche prometteuse pour la correction d’erreur est d’encoder l’information dans des oscillateurs harmoniques, par exemple des cavités micro-ondes, à l’aide de codes bosoniques. Cette approche tire avantage des longs temps de vie des oscillateurs harmoniques, de leur grand espace d’Hilbert, et permet de corriger les erreurs avec un minimum de surcoût en matériel. Le projet de stage consiste à explorer différents codes bosoniques, plus spécifiquement des codes où un qubit est encodé dans plusieurs oscillateurs harmoniques. Le sujet précis du stage pourra être adapté en fonction des intérêts du stagiaire, par exemple penchant plus sur des aspects mathématiques ou pratiques des codes bosoniques multimodes.
Ce projet théorique serait constitué d’un mélange de calculs analytiques et de simulations numériques.
Contact
Marco Aprili
28/10/2026
/
Thesis :
Funding :
28
Correction d'erreurs quantiques expérimentale avec des circuits supraconducteurs
Domaines
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Expérimental et théorique Description
L'informatique quantique promet des capacités transformatrices, allant de la simulation de matériaux
complexes et de réactions chimiques à la résolution de problèmes d'optimisation bien au-delà des
possibilités des ordinateurs classiques. Le principal obstacle sur la voie de la concrétisation de ces
capacités est la correction d'erreurs quantiques (QEC) : sans elle, les états quantiques fragiles se
décohèrent avant que tout calcul utile puisse être effectué.
Codes bosoniques : Les codes bosoniques stockent l'information quantique de manière redondante au sein du grand espace de Hilbert d'un oscillateur harmonique, protégeant cette information même lorsque des photons sont perdus.
Codes qudits : Les circuits supraconducteurs transmon sont naturellement des systèmes à niveaux
multiples. Nous étudions comment exploiter directement ces niveaux supplémentaires pour la QEC, tant en intégrant des qubits logiques dans un seul qudit transmon qu'en construisant des codes multi-qudits.
Contact
Marco Aprili
28/10/2026
/
Thesis :
Funding :
29
Centres colorés dans le diamant : contrôle et détection quantique
Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Un défi des technologies quantiques est de protéger un système quantique de son environnement tout en maintenant les interactions nécessaires à son contrôle et à sa lecture. Les centres colorés de spin dans le diamant et d’autres semi-conducteurs offrent une plateforme particulièrement intéressante pour étudier cette dualité. Leurs états électroniques et de spin peuvent être initialisés et lus optiquement, puis manipulés à l’aide de champs micro-ondes.
Quelques exemples de projets possibles sont :
• Lecture spin-vers-charge de centres NV. Caractériser les processus d’ionisation et de
recombinaison entre NV⁻ et NV⁰, puis mettre en œuvre un protocole de lecture spin-vers-charge afin
d’améliorer la fidélité de lecture du spin. Le projet pourra notamment comparer des centres NV natifs
à des centres créés par impulsions laser femtoseconde.
• Contrôle quantique adaptatif en temps réel. Développer des protocoles capables d’adapter
automatiquement la suite d’une séquence expérimentale en fonction du résultat d’une mesure
précédente. À l’aide d’un FPGA, le projet explorera comment cette rétroaction en temps réel peut
améliorer l’initialisation, la lecture du spin ou la rapidité du contrôle quantique.
• Stabilisation de l’état NV⁰ à faible diffusion spectrale. Étudier comment l’ingénierie du niveau de
Fermi et la nanostructuration peuvent stabiliser l’état NV⁰ tout en préservant ses propriétés optiques et
en limitant la diffusion spectrale.
Contact
Marco Aprili
28/10/2026
/
Thesis :
Funding :
30
Soliton dynamics in the 2D-1D crossover
Domaines
Quantum optics/Atomic physics/Laser
Quantum gases
Type of internship
Expérimental Description
The project will focus on the dynamics of solitons in low-dimensional Bose gases. In a first experiment, the student will generate solitons in an ensemble of identical 1D Bose gases and investigate their evolution upon introducing tunnel coupling between initially independent gases. In certain unstable regimes, we expect the formation of topological defects, such as Josephson vortices, which we will aim to observe experimentally. In the limit of uncoupled gases, we will also investigate the dynamics and collisions of multi-soliton states, with a particular focus on the role of quantum fluctuations in their evolution.
Contact
Jérôme Beugnon
27/10/2026
/
Thesis :
Funding :
31
Simulating the cosmologic reheating phase with quantum gases
Domaines
Quantum optics
Quantum gases
Type of internship
Expérimental et théorique Description
During the internship, you will participate at experiments on parametric excitation of a Bose-Einstein condensate. The system responds by emitting pairs of particles at well defined momenta. You will take data and analyze them. A model of the experiment could be simulated numerically with QuTip, a python package to simulate quantum state evolution. Part on the internship could be devoluted to such numerical simulations.
Contact
Denis Boiron
27/10/2026
/
Thesis :
Funding :
32
Delta Kick Squeezing in a Differential Atom Interferometer
Domaines
Quantum optics/Atomic physics/Laser
Quantum gases
Metrology
Type of internship
Expérimental Description
The aim of this internship is the implementation of "Delta-Kick squeezing" in a differential atom interferometer. DKS relies on the engineering of atom atom interactions in a BEC in free fall through atomic lensing methods based on pulse sequences realized with highly detuned high power laser beams. The focusing of the matter waves transiently increases the strength of the interactions, which induces strong correlations between the atoms, and leads to squeezing in the population difference between the two interferometer paths, and eventually to phase sensitivity below the standard quantum limit.
Contact
Franck Pereira dos Santos
27/10/2026
/
Thesis :
Funding :
33
Quantum Simulation with Ultracold Fermi gases
Domaines
Quantum optics/Atomic physics/Laser
Quantum gases
Type of internship
Expérimental et théorique Description
From the promise of exponentially faster computers, new ways to transmit and store information, and vastly improved sensing capabilities, quantum science has become an extremely active area of research, providing a wide range of platforms, each with its particular strength. With quantum gases of ultracold atoms, experiments have had tremendous success in tackling quantum many-body problems, where unexpected and qualitatively new phenomena can emerge. These problems are notoriously complex owing to the large number of interacting particles, strong interactions, disorder, or nonlinear dynamics.
Our group aims at understanding the behavior of strongly-interacting fermionic systems using an atom-based quantum simulator featuring single-atom imaging and manipulation capabilities. During this internship, you will take your first steps in the team by contributing with an experimental project (several options) with the perspective to join us as a PhD student in the Fall 2027.
Contact
Tarik Yefsah
27/10/2026
/
Thesis :
Funding :
34
Electron-nuclear spin-spin interaction in the HD+ molecule
Domaines
Quantum optics/Atomic physics/Laser
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Metrology
Type of internship
Théorique, numérique Description
The molecular hydrogen ions (H2+, HD+…) are the simplest molecules in nature. They are studied experimentally in high-resolution laser spectroscopy experiments, The comparison between experimental results and theoretical predictions allows for improved determination of fundamental constants such as the proton-electron mass ratio, and contributes to setting constraints on hypothetic beyond-standard-model interactions. The burgeoning experimental activity in this field gives strong motivation to improve the theory further by computing higher-order QED corrections.
The topic of the internship and PhD is related to a "puzzle" that has emerged in recent years in the hyperfine structure. Surprisingly large deviations between theory and experiment have been observed in the hyperfine intervals of HD+. The goal will be to investigate a plausible cause of these discrepancies, which resides in the relativistic corrections to the spin-spin interaction between the electron and nuclei. This will be studied following the Non Relativistic QED (NRQED) framework, where corrections are described by effective Hamiltonians in a nonrelativistic (Schrödinger) formalism. The work is partly analytical (derivation of effective Hamiltonians), and partly numerical (computation of effective operator expectation values, using highly precise variational wavefunctions), In practice, the relative amounts of theoretical and numerical work can be adapted to the applicant’s preferences.
Contact
Jean-Philippe Karr
27/10/2026
/
Thesis :
Funding :
35
2D Superconducting Spintronics
Domaines
Condensed matter
Low dimension physics
Nouveaux états électroniques de la matière corrélée
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
We study the interplay of magnetism and superconductivity in heterostructures based on few-layer van der Waals (vdW) superconductors (SC) and magnetic (M) materials, taking advantage of the recently established possibility of obtaining atomically clean interfaces between such materials and integrating these stacks into devices. Such systems provide a novel, highly-tuneable platform for superconducting spintronics.
Building on work by previous students Pierre-Eloi Paret and Maya Klang, the internship will focus on benchmarking and the demonstration of new functionality (energy-independent spin-filtering, gate tuneability…) in SC/M devices, where SC is a thin-film metal such as aluminium.
Next, probably during the PhD, the candidate will focus more on vdW magnetic materials and TMD superconductors; the latter have strong Ising spin-orbit coupling at the ultrathin limit. We aim to elucidate the spin- and valley-active roles of SC/M interfaces, including possible symmetry mismatch effects, as well as the effect of Ising spin-orbit coupling on spinful quasiparticle eigenmodes. Finally, we propose to demonstrate tuneable SC/M proximity effects, e.g. Edelstein and Yu-Shiba-Rusinov physics, and the all-electrical control of unconventional spinful SC states.
Contact
Charis Quay
27/10/2026
/
Thesis :
Funding :
36
Entanglement sudden death and its reversal in a Z2 spin liquid
Domaines
Condensed matter
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Théorique, numérique Description
Can heating protect quantum entanglement? Entanglement is a key resource for quantum technologies, but coupling to an environment can make it disappear abruptly, a phenomenon known as entanglement sudden death. This internship will explore whether an unusual quantum magnet can delay this loss or allow entanglement to revive.
We will study two spin qubits coupled to a Kitaev ladder, a tractable model of a quantum spin liquid. In this system, thermal excitations act as an effective source of disorder and can localise other excitations. This raises a counterintuitive question: can heating restrict the spread of quantum information into the environment and help preserve entanglement?
The student will combine analytical calculations with numerical simulations to investigate how entanglement evolves with temperature and qubit-environment coupling. Starting from simple limits and small systems, the project can extend to the role of environmental memory and localisation. The internship offers training in quantum magnetism, open quantum systems and numerical methods such as exact diagonalisation in Python. A background in quantum mechanics and an interest in analytical and computational work are expected.
Contact
Christina Psaroudaki
26/10/2026
/
Thesis :
Funding :
37
Investigating dynamics of Floquet states in topological crystalline insulators
Domaines
Condensed matter
Low dimension physics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
Intense, coherent lightwaves can drive materials into nonequilibrium states with properties that are inaccessible under equilibrium conditions. When electrons interact coherently with a periodic electric field, their energy bands can be reshaped through a mechanism known as Floquet engineering. This approach offers a promising route to modifying electronic properties and potentially inducing new topological phases of matter, including Floquet topological insulators. This internship aims to explore the potential of femtosecond mid-infrared pulses to coherently drive the topological crystalline insulator PbSnSe from a trivial phase into a light-induced Floquet topological phase. Using mid-infrared pump–THz probe spectroscopy, the candidate will track transient changes in the THz transmittance of thin PbSnSe layers and investigate how the response depends on the material bandgap and on the energy of the driving field, searching for signatures of light-induced topological states, potentially including a Dirac-like dispersion absent at equilibrium. In collaboration with Marco Schiro, the candidate will also contribute to developing a Floquet-based theoretical framework to interpret the measurements and characterize the transient electronic states. The internship can be continued as a PhD.
Contact
Juliette MANGENEY
21/10/2026
/
Thesis :
Funding :
38
AlGaAs chips for quantum communications and hybrid quantum networks
Domaines
Quantum information theory and quantum technologies
Quantum optics
Type of internship
Expérimental Description
Future quantum networks require connecting heterogeneous quantum platforms via existing telecom fibers. This involves interfacing long-lived matter qubits with low-loss photons and developing network-compatible entangled photon sources. The QITe team addresses this using AlGaAs quantum photonic chips, a III–V semiconductor platform combining strong second-order nonlinearity for photon-pair generation and a direct bandgap for room-temperature on-chip laser pumping.
Building on achievements like photon distribution over a deployed Paris Cité–Sorbonne fiber link and a deep-learning tool for AlGaAs sources interfacing \(^{88}\text{Sr}^+\) ions with the telecom C-band, this project pursues three directions:
1. Device design & fabrication: Developing AlGaAs sources for ion–photon interfaces and entangled-photon generation (C and O bands), collaborating with C2N.
2. Hybrid ion–photon links: Investigating entanglement swapping between a trapped ion and a telecom photon via Bell-state measurement (collaboration with MPQ).
3. Deployed networks: Implementing multi-user protocols combining industry-grade multiplexing with White Rabbit synchronization (collaboration with LIP6 and REFIMEVE).
The internship focuses on the quantum characterization of photonic devices and experimental quantum communication over deployed fibers. Intended for future PhD students, it is funded by the French PEPR Quantum Communication Testbed and the European QSNP.
Contact
Sara DUCCI
20/10/2026
/
Thesis :
Funding :
39
Optimization of an atomic beam for Rydberg excitation and ionization
Domaines
Quantum optics/Atomic physics/Laser
Kinetic theory ; Diffusion ; Long-range interacting systems
Type of internship
Expérimental Description
Atomic beams lie at the very foundation of most measurements in atomic physics. Rydberg atoms, in turn, are central to a wide range of challenges: quantum control, sensing, charge exchange, and the production of ion and/or electron beams. The proposed project aims to optimize an atomic beam, relying for instance on microchannels, which should significantly improve the beam collimation. Other techniques, such as magnetic compression or transverse (2D) laser cooling and guiding, may also be investigated. The goal is to obtain an intense, dense Cs or Rb atomic beam in the Rydberg excitation region. The experiment will then be transferred to different setups, such as an innovative electron microscope, the HREELM (High-Resolution Electron Energy Loss Microscope). This microscope detects very low-energy electrons with excellent time resolution. The objective is to exploit the space-time correlation between a Rydberg atom and its electron, obtained by ionizing the atom, in order to improve the electron source.
Contact
Daniel Comparat
20/10/2026
/
Thesis :
Funding :
40
Microwave Photon Detectors for Superconducting Qubit Readout
Domaines
Condensed matter
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental Description
The ability to detect individual microwave photons is a key enabling technology for quantum computing, quantum sensing, and fundamental physics experiments. Despite recent breakthroughs in detection efficiency, existing single-photon detectors typically suffer from a limited dynamic range, making them unsuitable for measuring signals containing more than a few photons. Overcoming this limitation by developing detectors sensitive to microwave pulses spanning 1 to 100 photons would represent a major step forward, particularly towards single-shot readout of superconducting qubits without the need for parametric amplifiers.
Our group has recently demonstrated a novel approach to microwave photon detection based on a microwave photon-to-electron converter, in which a superconducting tunnel junction acts as a voltage-tunable quantum absorber through photon-assisted quasiparticle tunneling. By developing an ultrasensitive charge detection technique, we have further demonstrated the detection of individual microwave photons.
Building on this expertise, we now aim to explore a complementary detection strategy exploiting the extreme temperature sensitivity of diffusive Josephson junctions. By operating a junction close to its switching instability, the absorption of a few microwave photons can trigger a transition from the superconducting to the resistive state, converting energy deposition into a robust electrical signal.
Contact
Julien Basset
20/10/2026
/
Thesis :
Funding :
41
Advanced Spectroscopy of Rare-Earth-Doped Crystals for Quantum Sensing and Analog Processing
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Quantum information theory and quantum technologies
Type of internship
Expérimental Description
At the Langevin Institute, we leverage rare-earth-doped crystals (e.g., Tm:YAG, Er:YSO) as powerful platforms for quantum sensing, memories, and analog signal processing. These materials, operated at cryogenic temperatures (~3K), offer exceptional optical linewidths, long population lifetimes, and strong light-matter interactions, key for quantum coherence. However, commercial cryogenics introduce vibrations and thermal loads, degrading performance.
This internship explores alternative matrices (YGG, co-doped crystals, molecular crystals, ceramics, waveguides) to extend lifetimes, damp vibrations, and optimize light guiding, enabling lower ion concentrations and reduced decoherence. The intern will use advanced spectroscopy (photon echo, spectral hole-burning) to characterize these materials. Ideal for M1/M2 or engineering students in optics/physics with experimental skills. Collaborative project with IRCP and Thales.
Contact
Anne Louchet-Chauvet
Laboratory : Institut Langevin - Ondes et Images - UMR7587
Team : Materials, Resonances, Interfaces
Team Website
Team : Materials, Resonances, Interfaces
Team Website
20/10/2026
/
Thesis :
Funding :
42
Quantum entanglement & metrology with inertial sensors
Domaines
Quantum optics/Atomic physics/Laser
Quantum optics
Quantum gases
Metrology
Type of internship
Théorique, numérique Description
The internship will be carried out in close collaboration with an experimental team and will focus on the theoretical and numerical study of spin-squeezing dynamics in Bose–Einstein condensates [5]. The main objective is to investigate how entanglement can improve the phase sensitivity of quantum inertial sensors while keeping their accuracy when accounting for different experimental defects. The intern will develop analytical models and perform numerical simulations to study spin squeezing in different experimental configurations, including trapped [6], free-falling [7], and differential atom-interferometer setups [8]. The project will provide the opportunity to work at the interface between quantum optics, ultra-cold atoms, and quantum sensing, with direct interaction between theoretical and experimental activities.
Contact
Robin Corgier
20/10/2026
/
Thesis :
Funding :
43
Universal oarsening dynamics and turbulence in a quantum fluid far from equilibrium
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Nonequilibrium statistical physics
Quantum optics
Non-linear optics
Non-equilibrium Statistical Physics
Hydrodynamics/Turbulence/Fluid mechanics
Quantum gases
Type of internship
Expérimental et théorique Description
What if you could do the experiments of a cold-atom lab without a vacuum chamber, without a MOT, and with a full image of the wavefunction in every shot?
Laser light propagating through a hot rubidium vapor behaves like a two-dimensional quantum fluid, and we can image its full field (density and phase) at each step of its evolution. We recently used this to watch the fluid order itself after a quench: vortices annihilate, phase domains grow, and the dynamics turns out to be self-similar. Beyond the usual two-point correlations, we found that the whole distribution of a local order parameter rescales with a single length, the distance between vortices. During the internship you will extend this to new initial states and to two-component fluids, analyze the data (vortex tracking, cumulants, finite-size statistics), and compare with numerical simulations of the Gross–Pitaevskii equation. The work combines hands-on optics with data analysis, and you will join a small team at LKB (Jussieu).
Contact
Quentin Glorieux
20/10/2026
/
Thesis :
Funding :
44
Synthetic Photonic Matter in a Quantum Fluid of Light.
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Statistical physics
Nonequilibrium statistical physics
Quantum optics
Non-linear optics
Non-equilibrium Statistical Physics
Hydrodynamics/Turbulence/Fluid mechanics
Quantum gases
Type of internship
Expérimental et théorique Description
Photons are great carriers of information but they usually don’t interact with one another. Atoms interact but are hard to manipulate and do not benefit from the toolbox of quantum optics for detecting quantum fluctuations and entanglement. Many approaches have been proposed to marry these two systems for quantum simulation of condensed matter with strongly interacting photons, but to date, the realization of large-scale synthetic materials made of optical photons is still missing.
Our team targets this exciting goal, namely the creation of Synthetic Photonic Matter.
We are offering an internship opportunity (followed by an ERC-funded PhD) to expand the capabilities of this platform to a new level by increasing by many orders of magnitude the effective photon-photon interactions and enter the strong interaction regime.
Contact
Quentin Glorieux
20/10/2026
/
Thesis :
Funding :
45
Créer de la matière artifielle à base de photons dans un Fluide Quantique de Lumière
Domaines
Condensed matter
Nonequilibrium statistical physics
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Quantum gases
Type of internship
Expérimental Description
Les photons sont d’excellents porteurs d’information, mais ils n’interagissent généralement pas les uns
avec les autres. Les atomes interagissent, mais ils sont difficiles à manipuler et ne bénéficient pas de
l’arsenal de l’optique quantique pour d´etecter les fluctuations quantiques et l’intrication. De nombreuses
approches ont été proposées pour marier ces deux systèmes en vue de simuler de la matière
condensée avec des photons fortement interagissant, mais à ce jour, la réalisation de matériaux
synthétiques composés de photons fait encore d´efaut.
Notre équipe vise cet objectif ambitieux, à savoir la création de Matiere Photonique Synthétique.
Nous proposons une opportunité de stage (suivie d'une thèse financée par l'ERC) pour étendre les capacités de notre plateforme à un nouveau niveau en augmentant de plusieurs ordres de grandeur les interactions effectives photon-photon et en entrant dans le régime des interactions fortes.
Contact
Quentin Glorieux
20/10/2026
/
Thesis :
Funding :
46
Nonlinear Josephson Readout for Single Microwave Photon Detectors
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Expérimental Description
Detecting a single microwave photon requires converting its arrival into a reliable electrical signal. In the detectors developed by the Quantronics group at CEA Saclay, the photon leaves a record in an internal transmon qubit. This internship will explore how Josephson nonlinearities can amplify that record and enable fast, faithful readout without a travelling-wave parametric amplifier.
The central idea is an asymmetric measurement: preserve the transmon’s ground state to suppress false clicks, while using its excited state to trigger a strongly distinguishable nonlinear resonator response. A dedicated Josephson element, separate from the transmon junction, will provide control over the readout nonlinearity. Combining circuit modelling, phase-space analysis, quantum simulations and cryogenic measurements, the project will investigate how bifurcation and the onset of chaos affect signal discrimination and measurement backaction. The goal is to improve photon detection while preserving transmon coherence and allowing rapid detector reset.
The internship is intended to lead to a CIFRE PhD with Qudigy, a spin-off of the Quantronics group that plans to begin commercialising single microwave photon detectors in 2027.
Contact
Emmanuel Flurin
20/10/2026
/
Thesis :
Funding :
47
Stage M2 – Optique quantique et interférométrie fibrée : mesurer les effets de la gravitation sur la lumière
Domaines
Quantum optics/Atomic physics/Laser
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum optics
Non-linear optics
Metrology
Type of internship
Expérimental Description
Comment la gravitation influence-t-elle les états quantiques de la lumière ?
Le laboratoire ARTEMIS (CNRS – Observatoire de la Côte d'Azur, Nice) développe une expérience d'interférométrie optique visant à mesurer les effets de la dilatation gravitationnelle du temps sur des états quantiques de lumière, à l'interface entre relativité générale et physique quantique.
Le stage portera sur la construction, la stabilisation et la caractérisation d'interféromètres fibrés de type Franson. Le travail comprendra l'assemblage de systèmes optiques, le développement de boucles d'asservissement de phase, ainsi que l'analyse des sources de bruit et de la sensibilité de l'expérience. Selon l'avancement du projet, des premières mesures à très faible flux lumineux pourront également être réalisées.
Ce stage s'adresse aux étudiants de M2 en physique, optique ou photonique, motivés par la recherche expérimentale et la métrologie de précision.
Lieu : Nice, laboratoire ARTEMIS (CNRS)
Durée : 6 mois, premier semestre 2027
Contact : eleonora.polini@oca.eu
Contact
Eleonora Polini
19/10/2026
/
Thesis :
Funding :
48
Implementation of a mass scanning quantum haloscope
Domaines
Condensed matter
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental et théorique Description
There is a general consensus that only a small fraction of the matter and energy in the universe has been detected (about 5%), the rest being dark matter (about 27%) and dark energy (about 68%). Elucidating the nature and properties of such objects is one of the greatest challenges in physics. In general, dark matter (e.g. Weakly Interacting Massive Particles, WIMPs) is thought to consist of particles that "floods" galactic halos - and hence the Milky Way. Therefore, in principle, it can in principle be detected in laboratory experiments.
This work will build on our recent theoretical and experimental developments of an apparatus, called a haloscope, designed to detect axions, prominent candidates of dark matter. We will develop a full data taking setup able to probe the benchmark models for QCD axions on a mass range more than two orders of magnitude larger than the state of the art. This will enable a full test of the axion paradigm in the high mass range which should become one of the most stringent experimental constraints for dark matter models.
Contact
Takis Kontos
19/10/2026
/
Thesis :
Funding :
49
2D heterostructures for optical control of individual quantum emitters
Domaines
Condensed matter
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Colloidal quantum emitters have emerged as promising candidates as building blocks for quantum telecomunications for their large tunability in synthesis, cristallography, colour, leading to almost lifetime-limited systems. However, due to their large surface to volume ratio, they are still sensitive to charge environment which is further translated into blinking and spectral diffusion, reducing the emission coherence. In this internship, and hopefully PhD, we propose to address the passive and active charge control by embedding the nanocrystals into a 2D van der waals heterostructure.
Contact
Antoine Borel
19/10/2026
/
Thesis :
Funding :
50
Quantum computing with a hybrid array of molecules and Rydberg atoms
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Quantum gases
Type of internship
Expérimental Description
Quantum computing requires precise control of individual quantum systems and their interactions. Ultracold molecules offer long-lived quantum states for storing information, while Rydberg atoms provide strong interactions for fast quantum operations. Combining these advantages opens a new route towards scalable quantum computing.
Our group is developing an experimental platform combining individual CaF molecules and Rb atoms in reconfigurable optical tweezer arrays. The long-term goal is to exploit molecule–Rydberg atom interactions to implement fast quantum gates and new methods for manipulating and measuring molecular qubits.
During this six-month internship, the student will contribute to the development and characterisation of the hybrid experimental platform. Depending on experimental progress and the student's interests, the work may focus on optical tweezer generation and control, single-particle trapping and imaging, Rydberg excitation, or the development of experimental control and data analysis techniques. The student will work closely with researchers developing this new quantum computing platform.
Contact
Chi Zhang
19/10/2026
/
Thesis :
Funding :
51
Ultrafast Quantum Acousto-Magneto-Plasmonics
Domaines
Condensed matter
Quantum optics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Metrology
Type of internship
Expérimental et théorique Description
The project will focus on active control of time-resolved photo-luminescence (PL) in functional quantum nanostructures excited with ultrashort laser pulses. Through a series of theoretical/ computa-tional tasks and the combined photoacous-tic/PL experiments the student will be asked to design a prototype of a quantum acousto-magneto-plasmonic modulator (exploiting plasmonic [1], magneto-plasmonic [2] or acoustic/magneto-acoustic [3] interactions), where various fs-laser-assisted excitations in hybrid multilayer structures would modulate the dynamics of nanoscale light emitters. Recent collaborative efforts in fs-laser nanofabrication [4] and unconventional solitonic superfluorescence in perovskites [5] will be combined to produce and characterize innovative hybrid nanostructures for quantum-optical applications. This research stay will be part of existing national and international collaborations providing access to fluorescent nanoparticles (PCnano), high-quality colloidal CdSe quantum dots and J-aggregates (France), hybrid perovskites (USA), hybrid metallic multilayers (Spain & Germany) and metasurfaces (Sweden) and advanced magneto-acoustic spectroscopy (South Korea).
[1] D. Pacifici et al., Nature Phot. 1, 402 (2007); Y. Fedutik et al. PRL 99, 136802 (2008)
[2] V.V. Temnov, Nature Phot. 6, 728 (2012); J. Opt. 18, 093002 (2016)
[3] A. Alekhin et al., Nano letters 23, 9295 (2023)
[4] P. Varlamov et al., PRL 135, 126904 (2025)
[5] M. Biliroglu et al., Nature 642, 71 (2025)
Contact
Vasily TEMNOV
18/10/2026
/
Thesis :
Funding :
52
Microscopic nature of the polaron-dimeron transition
Domaines
Condensed matter
Statistical physics
Low dimension physics
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum gases
Type of internship
Théorique, numérique Description
Diagrammatic Monte Carlo computations with the goal of advancing the fundamental understanding of the transition between polaron and dimeron states at the microscopic level, in collaboration with cold atom experiments.
Contact
Félix Werner
16/10/2026
/
Thesis :
Funding :
53
Quantum simulation with circular Rydberg states of strontium
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum gases
Type of internship
Expérimental Description
Rydberg atom arrays are powerful platforms for the quantum simulation of spin models, but the simulation time is limited by the short lifetime of laser-accessible Rydberg states. Circular Rydberg states, with maximum angular momentum, have an extremely long radiative lifetime, providing access to much longer quantum dynamics. Our group is building a quantum simulator based on circular states of strontium, a two-valence-electron atom whose ionic core remains optically active when the atom is in a Rydberg state, allowing optical manipulation directly in the Rydberg states. During the master’s internship, the student will build a new laser system to prepare Rydberg atoms in our new closed-cycle cryostat.
Contact
Brice Bakkali-Hassani
16/10/2026
/
Thesis :
Funding :
54
Quantum simulation with superconducting circuits
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Expérimental Description
We will build a superconducting circuit to simulate light–matter interaction beyond the strong-coupling limit: a fluxonium qubit coupled to a microwave resonator, with a coupling tuned in situ from zero up to the deep-strong regime, where it exceeds the bare frequencies of both. In this regime, the ground state becomes an entangled atom–field superposition, a Schrödinger cat, and the Dicke and spin-boson models predict quantum phase transitions driven by the interaction itself. Measuring these states remains an open challenge: once atom and photon hybridize, one can no longer read them out separately. Our approach relies on a new coupler, a Wheatstone bridge of Josephson inductances. When the bridge is balanced, the coupling vanishes by symmetry; a magnetic flux unbalances it and tunes the coupling in magnitude and sign. Switching the coupling off within a nanosecond projects the hybridized state onto the uncoupled basis, where standard readout applies. The student will first design the device using circuit quantization and numerical simulations, and develop superconducting air bridges in the ENS clean room. Depending on progress, the student will then fabricate the full circuit and perform its first spectroscopy at 10 mK. The internship can be continued as a PhD.
Contact
Zaki Leghtas
16/10/2026
/
Thesis :
Funding :
55
Theory of atom-photon and spin-photon interfaces : from cavity-QED to waveguide-QED
Domaines
Quantum optics/Atomic physics/Laser
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Théorique, numérique Description
In the framework of optical quantum computing and communication, a crucial goal consists in controlling the interaction between single atoms and single photons. This led to the development of cavity-QED, where natural or artificial atoms efficiently interact with confined photons. Many demonstrations were also performed in the simplified framework of waveguide-QED, exploiting the direct coupling of atoms to photonic waveguides, fibers, and on-chip photonic circuits
Our team in C2N has developed quantum-dot-based interfaces which can be used as efficient emitters of single photons: this led to the creation of the company Quandela. A strong challenge remains: developing quantum nodes that implement quantum logic operations on incoming photons. In such context, we use our light-matter interfaces as efficient receivers (and not just emitters) of quantum light.
In recent years, we realized that a breakthrough can also be obtained on the theory side: it becomes possible to describe many complex cavity-QED phenomena with the simpler framework of waveguide-QED . This allows implementing numerical and analytical strategies which were previously out of reach.
We now want to explore the potential of this breakthrough for spin-photon interfaces. We want to describe novel spin-photon and photon-photon entanglement schemes and to develop a simulation platform that any experimentalist could use, to predict the results of complex experiments with a variety of light-matter interfaces.
Contact
Loïc Lanco
15/10/2026
/
Thesis :
Funding :
56
Probing fundamental forces with cold atoms and nanostructures
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Fields theory/String theory
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Quantum gases
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Metrology
Type of internship
Expérimental Description
What happens when an atom comes close to a surface?
This apparently simple question lies at the intersection of quantum physics, nanoscience and fundamental physics. At short distances, an atom does not simply “see” a material surface: it interacts with the quantum fluctuations of the electromagnetic field surrounding it. These fluctuations give rise to the Casimir–Polder force, a quantum force whose behaviour in the nanometer range still raises fundamental questions. Furthermore, at short distances, deviations from known interactions could reveal new physics, such as hypothetical fifth forces predicted by several extensions of the Standard Model.
Contact
Quentin Bouton
15/10/2026
/
Thesis :
Funding :
57
Plateforme versatile pour la manipulation d’états quantiques photoniques
Domaines
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Type of internship
Expérimental et théorique Description
Parmi toutes les plateformes actuellement étudiées pour développer un ordinateur quantique, les solutions tout-optique présentent l’avantage de pouvoir facilement déplacer l’information quantique. Cet aspect est essentiel pour permettre la scalabilité. Il existe maintenant des propositions théoriques de protocoles pour implémenter efficacement sur des états photoniques toutes les portes logiques nécessaires au calcul quantique. Ces protocoles nécessitent cependant la génération d’états quantiques complexes, et ce point est au cœur de nos activités de recherche. Nous avons déjà développé une plateforme qui nous a permis de générer des états chat de Schrödinger optiques avec un taux de génération et une amplitude à la pointe de l’état de l’art. Pour développer des protocoles plus complexes, notre objectif est d’utiliser le multiplexage temporel en stockant les impulsions dans une cavité de grande longueur (~60m), et en y prélevant les impulsions que l’on veut manipuler. L’objet de ce stage sera de participer au montage de cette cavité longue, et de caractériser son asservissement en phase, avant de tester ses performances pour la génération d’états quantiques.
Contact
Rosa TUALLE-BROURI
Laboratory : LCF - UMR 8501
Team : Optique quantique - Génération d'états non-classiques
Team Website
Team : Optique quantique - Génération d'états non-classiques
Team Website
15/10/2026
/
Thesis :
Funding :
58
Ultracold dysprosium atoms: a giant spin for quantum simulation and metrology
Domaines
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Quantum gases
Metrology
Type of internship
Expérimental Description
M2 internship + PhD on ultracold dysprosium atoms, whose giant spin (J=8) enables quantum simulation of topological matter and quantum-enhanced sensing. The student will help build our new-generation experiment (quantum gas microscope) in the new ENS building, then study interacting spin systems.
Contact
Sylvain Nascimbene
15/10/2026
/
Thesis :
Funding :
59
Revealing topological helical edge states in topological insulators
Domaines
Condensed matter
Low dimension physics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Topological Insulators (TIs) hold great promise for making novel electronic devices, thanks to the existence at their boundaries of topologically protected conduction channels. Due to strong correlation of electrons spin and momentum, backscattering is prevented leading to ballistic transport. These edge states thus constitute highway for electrons. Unfortunately, the expected topological protection has turned out to be less robust than anticipated, notably due to the existence of conduction in the bulk. This complicates the fundamental study of the edge states, and motivates the search for different Tis.
During this internship/PhD, we will explore more recently discovered topological materials that are better suited to the discovery of 1D states, because they have fewer trivial. This is the case of Bi4Br4, a second order TI with high bulk gap. The internship/PhD will involve nanofabrication and quantum transport experiments at low temperature.
Contact
Richard Deblock
15/10/2026
/
Thesis :
Funding :
60
Using Graphene to Probe Strong-Field Quantum Electrodynamics
Domaines
Condensed matter
Low dimension physics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
Strong-field QED predicts spectacular effects, such as the decay of the vacuum into particle–antiparticle pairs (the Schwinger effect), but testing them requires fields of ~10¹⁸ V/m, far beyond petawatt lasers, and is not expected before the 2060s. Graphene offers a way around: its electrons behave as massless Dirac fermions moving at vF = c/300, so the Schwinger field drops from ~10¹⁸ V/m in vacuum to ~10⁶ V/m in a table-top transistor. In 2023 we achieved the first quantitative observation of the Schwinger effect in a graphene transistor at room temperature [Nature Physics 19, 830 (2023)].
This experimental internship opens QEDene, a 4-year ANR project with the objectives to (i) locate where and how the Schwinger effect nucleates inside the graphene channel transistor using scanning probes, optoelectronics and advanced device designs; (ii) test new strong-field QED predictions: photo-assisted Schwinger effect, Schwinger luminescence, and "vacuum boiling" regime where the dielectric permittivity itself is modified by the presence of a strong field.
Contact
Emmanuel Baudin
14/10/2026
/
Thesis :
Funding :
61
A continuous cold-atom interferometer to achieve quantum noise detection limit in gravity measurements
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Metrology
Type of internship
Expérimental Description
Context: Cold atom inertial sensors have many applications, in particular in geosciences. The operation of these sensors is based on atomic interferometry, taking advantage of superpositions between quantum states of different momentum in an atom, generated by optical transitions with two (or more) photons in order to realize accurate sensors.
The project aims at developing continuous gravity measurements using cold atom inter-ferometers in order to improve their sensitivity while maintaining their accuracy. Ultimately, this sensor must reach the detection limit, intrinsically linked to quantum projection noise. This method is very general in atomic quantum sensors and can also be applied to dif-ferent schemes of interferometer, atomic clocks...
Master thesis work: In order to realize this continuous measurement, we must use a sequence whose cycle time is twice as short as the interrogation. To achieve this regime, certain modifica-tions must be made to the existing experiment in order to simultaneously realize atomic beam splitters and mirror for three independent atomic samples with Raman transitions. Another study will focus on hybridization with a conventional sensor in order to suited to continuous operation. Major modifications in the preparation of the input quantum state and in the detection schemes must also be study and setup in order to ensure that the light emitted by the atoms dur-ing these stages does not disturb the atoms inside the interferometer.
Contact
Arnaud Landragin
14/10/2026
/
Thesis :
Funding :
62
Transport, extraction and thermalization of hot carriers
Domaines
Condensed matter
Statistical physics
Low dimension physics
Quantum Machines
Nonequilibrium statistical physics
Non-equilibrium Statistical Physics
Type of internship
Expérimental et théorique Description
When high energy photons are absorbed in a material, carriers are photo-generated with a large of kinetic energy above the band edge. In some well-tailored devices, it is possible to slow down carrier relaxation such that carriers form a “hot” distribution that may offer a pathway to very high efficiency of solar energy conversion. Two positions are available . The internships will have experimental and theoretical sides, and will be carried out in the framework of the ERC ULTIMATEPV.
Contact
Jean François Guillemoles
13/10/2026
/
Thesis :
Funding :
63
Electric field measurements by second harmonic generation of laser light for aerospace applications (E-FISH)
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Nonequilibrium statistical physics
Quantum optics
Non-linear optics
Non-equilibrium Statistical Physics
Kinetic theory ; Diffusion ; Long-range interacting systems
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Expérimental Description
Accurate knowledge of the electric field in the vicinity of electrically polarized systems is essential for understanding and modeling the plasma phenomena that may develop in their surroundings. Conventional measurement techniques, however, often rely on probes or electrodes that can significantly disturb the local electric-field distribution. A reliable characterization therefore requires a non-intrusive measurement technique capable of probing the field without altering it. Such a technique would be of particular interest for several aerospace applications. One example is the characterization of electric fields in plasmas used for combustion stabilization in aeronautical combustors or for the development of plasma actuators. Another is the measurement of the electric field around an aircraft or other aerospace structure exposed to the atmospheric electric field, with the aim of assessing its susceptibility to lightning attachment. The project will begin with the implementation of an EFISH measurement system in the laboratory. This setup will be used to evaluate the capabilities and limitations of the current state of the art. Building on this assessment, the candidate will design and implement improvements to the system, with two main objectives: improving the spatial resolution of the electric-field measurements and extending the measurement range.
Contact
Svetlana Starikovskaia
12/10/2026
/
Thesis :
Funding :
64
Plasma Shchelkin sPiral: Initiation of DEtonation by nanosecond dischaRge (SPIDER)
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Non-linear optics
Non-equilibrium Statistical Physics
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Expérimental Description
Plasma Shchelkin sPiral: Initiation of DEtonation by nanosecond dischaRge (SPIDER)
How do detonation waves arise? Can they be suppressed when they are dangerous - or harnessed when they are useful? From next-generation Pulsed and Rotating Detonation Engines to catastrophic explosions and even supernovae, detonation physics spans engineering, safety and astrophysics. The challenge is fundamental: what triggers a detonation, how does it become self-sustained, and, the most important, how can we control it? In this M2/PhD, a new approach is suggested to be explored: using pulsed nonequilibrium plasma to control the initiation and propagation of detonation waves. The PhD project is experimental and will be carried out at two sites: plasma physics and laser diagnostics in Paris, and detonation experiments in Poitiers. Particular attention will be paid to the link between plasma-induced chemical reactivity and detonation cell size, as well as to the role of the Zeldovich gradient mechanism in the transition from deflagration to detonation. Advanced laser techniques as TALIF, E-FISH, Thomson scattering will be used to control plasma parameters. Close collaboration with CERFACS will provide, on the basis of complex 2D and 3D-numerical modeling, an access to parametric study and better understanding of conditions of the experiments.
Contact
Svetlana Starikovskaia
12/10/2026
/
Thesis :
Funding :
65
Photon-Correlation Spectroscopy of Quantum Cutting Perovskite Nanocrystals
Domaines
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Quantum cutting (QC) converts one absorbed high-energy photon into two lower-energy emissive excitations. Yb-doped halide-perovskite nanocrystals are particularly promising because the semiconductor host provides strong UV-visible absorption, while Yb^3+ emits near 980 nm, within the absorption range of silicon. Absolute photoluminescence quantum yields (PLQYs) above 100% have been reported for Yb:CsPb(Cl,Br)3 nanocrystals. However, these results remain difficult to reproduce, and the microscopic processes responsible for photon multiplication are still debated.
State of the art: PLQY measures the average number of emitted photons per absorbed photon but does not establish whether two photons originate from the same absorption event. QC should instead produce temporally correlated photon pairs from Yb emission, leading to photon bunching, a peak in the second-order correlation function g(2)(𝜏), whereas conventional one-to-one downshifting ideally produces Poissonian photon statistics. Correlation measurements therefore provide an orthogonal observable to PLQY.
Project: The student will establish and validate a near-infrared photon-correlation experiment. Hyperspectral PLQY imaging will provide spatially and spectrally resolved absolute PLQY maps. Joint interpretations will assess whether the observed Yb emission arises from photon multiplication or conventional one-to-one sensitisation.
Contact
Zhuoying CHEN
11/10/2026
/
Thesis :
Funding :
66
Mutlimode control and fundamental limits in ultra-sensitive optomechanical measurement.
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Type of internship
Expérimental Description
Optomechanics investigates the interactions between mechanical and electromagnetic degrees of freedom. Over the past 3 decades, this approach has imposed as paradigmatic for the experimental study of fundamental processes in motion continuous measurement, and preparing non-classical motional states of macroscopic mechanical bodies. Currently, the main hurdle for pushing deep in the quantum regime essentially stems from decoherence due to an infinite cohort of optical and mechanical modes, which 'leak' noises into the optomechanical mode of interest.
The overall context of this experimental internship is to address this fundamental issue. The idea is to deploy a novel approach, based on the measurement of the full matrix capturing the optomechanically-induced interactions between all mechanical and optical modes. Using information theory, we expect to gain full control over the multimode properties of the optomechanical system, and in particular to deeply suppress off-resonant coupling contributions by, that is the main contribution to decoherence, by tuning the illumination using wavefront shaping. The project will be based on early results already obtained in our group and will be conducted in the frame of an ANR collaboration.
Contact
Pierre Verlot
10/10/2026
/
Thesis :
Funding :
67
Atom-Tweezer Arrays in an Optical Microcavity for Quantum Technologies
Domaines
Quantum optics/Atomic physics/Laser
Quantum optics
Quantum gases
Metrology
Type of internship
Expérimental et théorique Description
This project explores a new experimental platform combining single-atom control with cavity-mediated long-range interactions. At LKB, we have recently demonstrated arrays of individually trapped atoms strongly coupled to a high-finesse optical microcavity, with single-atom-resolved detection. The experiment now opens exciting perspectives for quantum simulation of spin transport under tunable disorder and dissipation, as well as for quantum-enhanced metrology. Depending on the progress of the experiment, the internship will focus on experimental developments such as optical beam shaping or laser stabilization. The student will gain hands-on experience in optics, lasers, cold atoms and cavity QED, with the possibility of continuing toward a PhD exploring these new research directions.
Contact
Romain Long
09/10/2026
/
Thesis :
Funding :
68
Coherent and incoherent spin manipulations in a degenerate Fermi gas
Domaines
Quantum optics/Atomic physics/Laser
Nouveaux états électroniques de la matière corrélée
Quantum information theory and quantum technologies
Quantum gases
Metrology
Type of internship
Expérimental Description
Ultracold atoms offer a platform to explore quantum collective effects. We perform experiments with degenerate Fermi gases of strontium 87 atoms – an exotic fermionic system, with a spin-9/2 degree of freedom. This is both an opportunity to explore novel many-body effects (for example, magnetic phenomena), and a “technological” opportunity to use quantum objects with a large internal Hilbert space, as a resource for quantum simulation, computation, or sensing.
We have developed original methods to manipulate and measure the atomic spins, that rely on the narrow forbidden lines of atomic strontium. We want now to demonstrate the production of quantum correlated states, by engineering either Hamiltonian or dissipative terms acting on the atoms, and explore the way towards their use in other quantum technologies (e.g., optical clocks). The dissipative control, in particular, illustrate the groundbreaking idea that couplings to an environment, typically destroying the manifestations of quantum physics, will in specific cases actually produce and stabilize quantum states with many-body correlations.
This work will be realized on an ultracold atom platform in operating conditions. The master’s internship will consist in developing a laser system enabling independent coherent and incoherent spin manipulations. It will be an opportunity to discover the quantum gas platform as a whole, possibly as a preparatory step for longer-term integration in the team.
Contact
Martin Robert de Saint Vincent
09/10/2026
/
Thesis :
Funding :
69
Probing quantum coherence in artificial atoms with relativistic electrons
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Quantum information theory and quantum technologies
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Can a fast electron probe the quantum coherence of an artificial atom? Quantum coherence is central to quantum physics and underpins quantum information processing. Measuring it in individual systems such as quantum dots with nanometer spatial resolution would open new possibilities for exploring light–matter interactions and developing approaches to quantum-state readout.
We now seek to cross a new frontier in quantum science and technology: accessing the quantum coherence of an individual artificial atom with a relativistic electron. The central question is whether, and how, this coherence can be encoded in the electron’s state and experimentally read out.
This M2 internship, with the prospect of continuing into a PhD, will contribute to this effort within the ERC Advanced Grant FreeQCC. The project combines a state-of-the-art monochromated transmission electron microscope, a laser system, and engineered samples designed to enhance electron–light–matter interactions. During the internship, the student will help develop the optical setup, participate in experiments, and analyze the resulting data.
We seek a curious and motivated student interested in quantum physics, nano-optics, and experimental research. The project offers the opportunity to explore an emerging research frontier with implications for both fundamental physics and future quantum technologies, through a combination of advanced instrumentation, experiments, and theory.
Contact
Mathieu Kociak
07/10/2026
/
Thesis :
Funding :
70
Variational Phase-Space Methods for Quantum and Complex Dynamics
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Statistical physics
Nouveaux états électroniques de la matière corrélée
Quantum Machines
Nonequilibrium statistical physics
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Non-equilibrium Statistical Physics
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Théorique, numérique Description
This theoretical physics internship will explore new variational phase-space methods for understanding quantum and complex dynamics beyond the reach of exact numerical simulations.
The starting point is our recent work published in Physical Review X (2026), which combines multi-Gaussian representations of the Wigner distribution, variational principles and automatic differentiation. The Wigner distribution represents quantum states in phase space, capturing correlations and quantum interference. Our approach turns their dynamics into the evolution of a compact set of parameters, opening new possibilities for studying large interacting systems.
The project will investigate how these ideas can be extended and applied across a broad range of problems: open and driven quantum systems, quantum many-body dynamics, nonlinear light-matter interactions, and potentially nonlinear, stochastic and classical complex systems.
The research direction will be adapted to the student's interests, combining analytical developments with numerical simulations.
Supervisor: Prof. Cristiano Ciuti, MPQ, Université Paris Cité / CNRS.
Contact: cristiano.ciuti@u-pariscite.fr
Contact
Cristiano Ciuti
07/10/2026
/
Thesis :
Funding :
71
Magneto-Ionic Nanodevices for Neuromorphic Computing
Domaines
Condensed matter
Low dimension physics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Scientific project: Controlling magnetic properties through voltage-driven ionic motion opens exciting opportunities for next-generation spintronic technologies, including reconfigurable multistate memories and neuromorphic hardware. By combining ionic and magnetic degrees of freedom, magneto-ionic nanodevices offer new ways to emulate the adaptive behavior of biological synapses. Our group at C2N has demonstrated large, reversible, and non-volatile voltage-induced changes in the magnetic properties of spintronic nanodevices, as well as their potential to realize bioinspired synaptic functionalities.
We are seeking a highly motivated master’s student to join our team for an experimental research project at the interface of magnetism, ionics, and neuromorphic computing. The project will investigate how magneto-ionic gating can control the dynamics of magnetic domain walls driven by current pulses in nanodevices. By exploring the interplay between ionics and spintronics, the student will develop and characterize new device functionalities for artificial synapses. The ultimate ambition is to combine an ensemble of devices to evaluate its performance for given learning tasks.
The student will benefit from our team’s complementary expertise in magneto-ionics, neuromorphic computing architectures, and nanofabrication, while gaining hands-on experience in state of the art experimental research.
Contact
Liza Herrera Diez
07/10/2026
/
Thesis :
Funding :
72
Probing the cosmic dawn with a quantum correlator
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental et théorique Description
The constant pace of discoveries of new radio sources in the Universe calls for new receivers
which would be faster, more sensitive and less subject to parasitic signals. An outstanding
problem which could benefit from new detection schemes is, for example, the accurate measurement of the 21-cm, strongly red-shifted, cosmological signal, in the low 100 MHz range. Many pioneering experiments have been carried out, such as EDGES, REACH, NENUFAR or SARAS, but the cosmological signal has been elusive so far.
The main idea to be developed in this project is to use quantum technologies, and in particular multicavity setups with granular aluminum Josephson circuits in order to develop a quantum correlator which could unlock very feeble cosmological signals connected to deep questions about the early universe or fast bursts entailing ununderstood astrophysical processes. We have recently shown that we could have a clear advantage of a cavity quantum electrodynamics setup over a classical receiver chain for the very low redshifted 21-cm signal from benchmark constellations such as the Cygnus or Cassiopea. We would like to test the same ideas on a quantum correlator first on pulsars or galactic masers as a benchmark before going to the very high redshifted signals.
Contact
Takis Kontos
06/10/2026
/
Thesis :
Funding :
73
Quantum simulation with a hybrid Rydberg atom platform
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Type of internship
Expérimental Description
The long lifetimes and strong dipole-dipole interactions of circular Rydberg atoms make them particularly appealing for the realization of quantum simulations. A recently-developed hybrid platform, that combines them with ancillary atoms excited to standard Rydberg levels, has enabled their local non-destructive measurement and manipulation, and the simulation of spin-exchange interactions over unprecedented timescales. The intern will participate in the development of a novel cryogenic version of the platform, where we will fully benefit from the long lifetimes of circular states. We will use the new setup to demonstrate quantum simulations in a subsequent doctoral work.
Contact
Clément Sayrin
05/10/2026
/
Thesis :
Funding :
74
Quasi-1D Fermi gases
Domaines
Quantum gases
Type of internship
Expérimental et théorique Description
This activities of the group focus on the study of strongly correlated fermions in low-dimension. We explore how the interplay between strong confinement and strong interactions allowed by Feshbach resonances gives rise to Effective field theories generalized known paradigms in low dimension.
Contact
Frédéric Chevy
05/10/2026
/
Thesis :
Funding :
75
Probing the Fermi surface in a lattice with metastable helium atoms
Domaines
Quantum optics/Atomic physics/Laser
Quantum gases
Type of internship
Expérimental Description
The helium lattice team exploits the properties of helium species to probe lattice gases atom-by-atom [1]. The apparatus, initially operated with the bosonic species helium-4 [2], led to study the Bogoliubov pairing through atom correlations [3,4], and to probe the superfluid-Mott transition through full counting statistics [5,6]. The detection method also applies to the fermionic species helium-3. Therefore, we have recently upgraded the apparatus to add helium-3 and produce a degenerate Fermi gas. In a near future, we will load the fermionic gas into lattices to perform studies of lattice fermions.
The Master 2 internship will aim at characterizing the Fermi surface of non-interacting lattice fermions, leading to a PhD thesis centered on interacting lattice fermions (e.g. Fermi-Hubbard physics) and momentum correlations. The intern will join on-going efforts of the experimental team to achieve (i) loading helium-3 gas into the optical lattices, (ii) acquiring the experimental data, varying experimental parameters such as temperature or lattice filling, and (iii) analyzing the single-atom-resolved distributions to characterize the Fermi surface.
[1] Phys. Rev. A 97, 061609 (2018); Phys. Rev. X Quantum 5, 040324 (2024).
[2] Phys. Rev. Lett. 126, 045301 (2021).
[3] Nature Physics 17, 1364 (2021).
[4] Nature Physics 21, 57-62 (2025).
[5] Nature 655, 1148 (2026).
[6] arXiv:2609.03433 (2026).
Contact
David CLEMENT
05/10/2026
/
Thesis :
Funding :
76
Rare-Earth based quantum memory
Domaines
Condensed matter
Quantum information theory and quantum technologies
Type of internship
Expérimental et théorique Description
The internship project takes place at the ENS Lyon Physics Laboratory. It offers the chance to build a random-access quantum memory, a device that stores several quantum states and releases any one of them on demand, a key ingredient for parallel quantum processing. Electron spin ensembles store microwave states about 100 times longer than superconducting qubits but are limited to below 10% efficiency, a challenge the project tackles using ytterbium ions in CaWO₄, which keep state-of-the-art coherence at high concentration and operate at zero magnetic field. The milestones are to test a new deposition technique that boosts spin–resonator coupling, then demonstrate storage of classical and quantum microwave fields at an efficiency close to 100%.
Contact
Audrey Bienfait
Laboratory : laboratoire de physique, ENS de Lyon - umr 5672
Team : ENS de Lyon, Physique
Team Website
Team : ENS de Lyon, Physique
Team Website
02/10/2026
/
Thesis :
Funding :
77
Bose-Einstein Condensates with tunable interactions
Domaines
Quantum gases
Type of internship
Expérimental Contact
Thomas Bourdel
02/10/2026
/
Thesis :
Funding :
78
Small-scale chaos and the Vlasov limit of N-body dynamics
Domaines
Statistical physics
Nonequilibrium statistical physics
Non-equilibrium Statistical Physics
Kinetic theory ; Diffusion ; Long-range interacting systems
Type of internship
Théorique, numérique Description
This internship focuses on the role of small-scale chaos in the convergence of the Klimontovich
equation towards the Vlasov one. See attached PDF for the full proposal.
Contact
Jean-Baptiste Fouvry
01/10/2026
/
Thesis :
Funding :
79
Hybrid and non-Gaussian optical quantum state engineering
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Type of internship
Expérimental et théorique Description
The use of light in quantum information processing and networks has historically been split between two communities. On one side is the continuous-variable (CV) approach, which treats optical fields as waves. On the other side is the discrete-variable (DV) approach, harnessing the properties of individual photons. By considering a hybrid approach bridging the two, one could envision quantum architectures where the two encodings can be for instance interchanged fittingly to the task at hand.
In this hybrid quantum optics context, the LKB team demonstrated the first engineering of hybrid entanglement of light, i.e. entanglement between particle- and wave-like optical qubits. This novel resource enabled then to demonstrate the remote state preparation of cat-state qubits and recently the teleportation between different encodings, realizing thereby a first quantum-bit encoding converter.
The research of the group is now focusing into two directions. The first one aims at harnessing further the unique benefits of the hybrid optical approach for quantum connections, to develop optical quantum connections versatile enough to connect different physical quantum platforms and faithfully carry a broad range of quantum states. The second direction builds on the high-fidelity non-gaussian resources available on the experimental setup and aims at the realization of complex optical non-gaussian states that can find applications in bosonic error correcting codes.
Contact
Alban Urvoy
01/10/2026
/
Thesis :
Funding :
80
Waveguide-QED - combining cold atoms and nanophotonics (2 internships)
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Type of internship
Expérimental et théorique Description
Controlling light-matter interaction at the single-quantum level is a long-standing goal in optical physics, with applications to quantum optics and quantum information science. However, single photons usually do not interact with each other and the interaction needs to be mediated by an atomic system. Enhancing this coupling has been the driving force for a large community over the past two decades.
In contrast to the cavity-QED approach where the interaction is enhanced by a cavity around the atoms, strong transverse confinement in single-pass nanoscale waveguides recently triggered various investigations for coupling guided light and cold atoms. Specifically, a subwavelength waveguide can provide a large evanescent field that can interact with atoms trapped in the vicinity. An atom close to the surface can absorb a fraction of the guided light as the effective mode area is comparable with the atom cross-section. This emerging field known as waveguide-QED promises unique applications to quantum networks, quantum non-linear optics and quantum simulation. Recently, the LKB team pushed the field for the first time into the quantum regime by creating an entangled state of an array of atoms coupled to such a waveguide. Two experiments are dedicated to this waveguide-QED effort and internships/PhD projects are proposed on both of them.
Contact
Alban Urvoy
01/10/2026
/
Thesis :
Funding :
81
Chiral Majorana modes in graphene and TMD multilayers
Domaines
Condensed matter
Low dimension physics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Théorique, numérique Description
In this internship, motivated by recent experiments on graphene and TMD multilayers, we will theoretically investigate 2D multilayers that could host chiral Majorana modes. We will also study the creation of Majorana wave packets and their time-dependent propagation and manipulation.
Contact
Dganit MEIDAN
01/10/2026
/
Thesis :
Funding :
82
Steering quantum states through measurements and feedback
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Non-equilibrium Statistical Physics
Type of internship
Théorique, numérique Description
The objective of this research project is to investigate the interplay between partial postselection and conditional feedback in monitored many-body quantum systems. To explore these effects, we will consider a many-body system of non-interacting electrons undergoing entangling unitary evolution interrupted by disentangling quantum measurements. We will study how the resulting dynamics are modified by local particle injection and depletion, as well as by local and non-local feedback protocols and adaptive partial postselection.
Contact
Dganit MEIDAN
01/10/2026
/
Thesis :
Funding :
83
Time resolved scanning tunnelling microscopy
Domaines
Condensed matter
Nouveaux états électroniques de la matière corrélée
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Quantum matter, such as high temperature superconductivity, is generally emergent, meaning that the physics cannot be understood by the sum of the individual components. The crucial additional ingredient is the interactions between the atoms (or lattice), electrons and spins. To directly study these interactions, we are currently developing a time-resolved scanning tunnelling microscope. This instrument will provide direct access to the surface atoms and the local electronic structure, while at the same time enabling read-out and/or excitation at GHz frequencies (i.e. nanosecond timescales).
During this internship, you will be the first to test and use this new instrument. Initially, measurements will be performed at room temperature to make sure that the microscope works correctly. Then, exploration at low temperature and high frequency will follow, with the aim of uncovering previously inaccessible information about the workings of quantum matter.
Contact
Freek Massee
30/09/2026
/
Thesis :
Funding :
84
Strong light-matter interactions with intra-cavity Rydberg superatoms
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental et théorique Description
Optical photons are excellent carriers of quantum information, but their lack of mutual interactions is a major roadblock for quantum technologies. Our setup enables such interactions by transiently injecting the photons into an intra-cavity cold atomic gas and converting them into strongly interacting Rydberg polaritons. The Rydberg-blockaded cloud then acts as an effective two-level superatom with an enhanced coupling to light. We can coherently manipulate its state, efficiently detect it, and observe state-dependent pi phase flips on the light reflected from the cavity as required for many quantum engineering tasks. We obtained the first fully deterministically-generated free-propagating states of light with negative Wigner functions. We also developed a deep theoretical understanding of the rich physics and the abilities of the superatoms, validated by experimental results.
This platform opens many perspectives for developing deterministic multi-photon gates, performing quantum measurements impossible with current techniques, generating non-classical free-propagating resource states, and studying strongly correlated quantum fluids of light.
Contact
Sébastien Garcia
30/09/2026
/
Thesis :
Funding :
85
Magnetic resonance of single biomolecules with quantum superconducting circuits
Domaines
Biophysics
Quantum Machines
Quantum information theory and quantum technologies
Quantum optics
Type of internship
Expérimental Description
Superconducting qubits, developed for quantum computing, can also serve as sensitive detectors for probing the magnetic properties of individual molecules. The Quantronics group has demonstrated the detection of individual electron spins in crystals by counting the microwave photons they emit with a transmon qubit [1], as well as the coherent control of neighbouring nuclear spins [2]. This internship will contribute to our ongoing work on molecular spins in frozen solution, with the aim of performing magnetic resonance spectroscopy on individual spin-labelled biomolecules.
Electron spin resonance (ESR) provides information about the local electronic and magnetic environment of molecules. In structural biology, interactions between spin labels can also be used to measure distances within proteins. Conventional experiments average over many molecules, obscuring their individual properties and limiting spectroscopic resolution. Measuring molecules individually could overcome this ensemble broadening and reveal local environments and spin couplings that are otherwise unresolved, opening access to more detailed structural information.
Contact
Emmanuel Flurin
30/09/2026
/
Thesis :
Funding :
86
A new source at 578 nm for clock interrogation and shelving of Yb atoms
Domaines
Quantum optics/Atomic physics/Laser
Quantum optics
Non-linear optics
Quantum gases
Metrology
Type of internship
Expérimental Description
The internship will take place in the ytterbium lattice clocks team at LTE, Observatoire de Paris. Two topics are proposed in parallel: the design and the construction of a 578 nm source based on non-linear optics, and the demonstration of an atomic drain technique aiming at shelving atoms in metastable states so as to decouple the dynamics of a magneto-optical trap from the capture in a deep optical lattice.
Contact
Rodolphe Le Targat
28/09/2026
/
Thesis :
Funding :
87
Bio-inspired superconducting sensors for sub-THz technologies
Domaines
Condensed matter
Physics of living systems
Quantum information theory and quantum technologies
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
The overall objective is to develop an ultrasensitive, on-chip sub-THz spectrometer that mimics the cochlea’s remarkable ability to decompose complex audio signals. This will be achieved by combining graded metamaterial designs with the nonlinear dynamics of superconductors.
The internship will consist in setting up a 100GHz measurement apparatus and simulating, then fabricating a first prototype to verify the properties of the rainbow trapping in the linear case.
Do not hesitate to contact us, if you are interested !
Contact
Alexis Jouan
28/09/2026
/
Thesis :
Funding :
88
Local THz photons for coherent light-matter interaction
Domaines
Condensed matter
Low dimension physics
Nouveaux états électroniques de la matière corrélée
Quantum information theory and quantum technologies
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
The goal of this project is to build a quantum spectrometer in the meV range that opens the road for the study of quantum coherences in low dimensional systems. It lies at the frontier between microwave and optics will enrich two fields of research and give access to mesoscopic phenomena such as magnonic excitations.
Feel free to contact me if you are interested!
Contact
Alexis Jouan
28/09/2026
/
Thesis :
Funding :
89
Can biodiversity be seen from space? Multiscale complexity in remote-sensing images to predict ecosystem trends.
Domaines
Statistical physics
Biophysics
Physics of living systems
Type of internship
Théorique, numérique Description
A biodiverse landscape may not simply be greener or more heterogeneous. It may possess a distinctive organisation across scales: habitat mosaics, edges, corridors, characteristic patch sizes, lacunarity and long-range correlations. Aerial and satellite images preserve much of this geometry, yet standard ecological products often compress it into pixel classes or a few averages. The challenge is to determine whether multiscale observables carry robust ecological information and, as a possible extension, whether they reveal spatial reorganisation before visible degradation.
Contact
Michael Benzaquen
27/09/2026
/
Thesis :
Funding :
90
{Mapping atmospheric convection from paragliding trajectories
Domaines
Statistical physics
Physics of living systems
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Théorique, numérique Description
Can thousands of recreational flights become an observatory of atmospheric convection? This internship will use large-scale paragliding trajectories to investigate the structure and dynamics of thermal updrafts. Combining atmospheric physics, trajectory analysis and statistical inference, we will explore what nearby pilots can reveal collectively about an invisible, evolving flow, while accounting for the selective way they explore it.
Contact
Michael Benzaquen
27/09/2026
/
Thesis :
Funding :
91
2D materials architectures for advanced tuning of thermal properties
Domaines
Condensed matter
Low dimension physics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
The internship explores heat and charge transport in nanostructured graphene to improve thermoelectric conversion and explore thermal rectification. Using geometrically modified graphene with periodic nano-holes or nanocostriction, it aims to control phonon and electron mean free paths, enabling asymmetric heat conduction and enhanced Seebeck effect. The student will fabricate devices (graphene transfer, e-beam lithography, etching), measure electrical and thermal properties (Seebeck coefficient, electrical and thermal conductivity, rectification), and analyze results through finite element simulations. The project offers practical training in 2D materials and advances understanding of geometry-driven thermal and thermoelectric control.
Contact
Maria Luisa Della Rocca
25/09/2026
/
Thesis :
Funding :
92
Molecular membrane fabrication for quantum technologies
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Low dimension physics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
The central objective of this internship is to establish a reproducible route for fabricating europium
molecular membranes and, crucially, to determine whether their exceptional optical properties are
preserved after exfoliation and transfer. The student will optimize the mechanical exfoliation
conditions to increase the yield of thin, large-area flakes; develop deterministic dry-transfer protocols
onto photonic substrates such as SiC, SiO2/Si and glass; characterize membrane thickness,
morphology and crystalline quality using optical interference microscopy, atomic force microscopy
and Raman spectroscopy; and investigate their luminescence and optical homogeneous linewidths at
cryogenic temperatures using spectral hole burning. Comparison with bulk crystals will allow the
influence of exfoliation, reduced thickness and substrate coupling on the optical coherence of the
molecular material to be established.
Contact
Diana SERRANO
25/09/2026
/
Thesis :
Funding :
93
Single-Photon Detection and Correlation Measurements in Ultracold Atoms
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Quantum optics
Quantum gases
Type of internship
Expérimental Description
The Exotic Quantum Matter (EQM) Group is looking for a highly motivated Master 2 student to characterize a single-photon detection system that will subsequently be integrated into the experimental platform. The EQM group operates a quantum simulator based on ultracold potassium atoms to study strongly interacting quantum matter and light–matter interactions.
The EQM team has already demonstrated strong photon–photon interactions through classical measurements of optical intensity and phase. The next step is to investigate these interactions at the level of individual photons, where quantum correlations become directly accessible.
The internship will establish a two-channel single-photon detection system based on two single-photon avalanche diodes (SPADs) and a high-resolution photon arrival-time tagger. The system will be used to measure the second-order photon correlation function g²(τ).
Contact
Tom Bienaimé
25/09/2026
/
Thesis :
Funding :
94
Gravimètre à atomes froids aéroporté
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Metrology
Type of internship
Expérimental Description
Le stage proposé consistera à participer au premier essai aéroporté d'un gravimètre quantique de seconde génération, plus compacts, plus précis et permettant non seulement de mesurer l’amplitude du champ de gravité, mais également d’en déterminer l’orientation . Dans un premier temps, le stagiaire mettra en place une procédure de calibration des capteurs auxiliaires nécessaires au fonctionnement du gravimètre. Dans un deuxième temps, il participera à une campagne de mesures en vol aux îles Féroé. Enfin, il contribuera au traitement et à l’analyse des données acquises pendant les vols. Ce stage permettra au stagiaire d’acquérir des compétences à l’interface de plusieurs domaines : physique quantique, métrologie de haute précision, instrumentation et traitement de données. Le stage pourra se poursuivre par une thèse portant sur la suite du développement de ce gravimètre quantique, avec pour objectif la réalisation de mesures vectorielles du champ de gravité.
Contact
Sylvain Schwartz
24/09/2026
/
Thesis :
Funding :
95
Métrologie quantique avec des atomes de Rydberg dans des pinces optiques
Domaines
Quantum optics/Atomic physics/Laser
Quantum information theory and quantum technologies
Metrology
Type of internship
Expérimental Description
Ce stage s'inscrit dans un projet visant à explorer une nouvelle génération de capteurs de champs électromagnétiques avec des atomes froids de Rydberg. L'idée est de combiner la grande sensibilité des atomes de Rydberg au très bon degré de contrôle et de cohérence qu'il est possible d'atteindre avec des atomes froids contrôlés dans des pinces optiques. Cela ouvre la voie à de nouvelles applications dans des domaines variés comme : l’imagerie THz, la détection électromagnétique, la calibration des déplacements lumineux dans les horloges atomiques et des expériences de métrologie quantique où l'intrication entre atomes est mise à profit pour améliorer la sensibilité des mesures.
Notre dispositif expérimental a permis la démonstration de méthodes innovantes pour la mesure d’un champ micro-onde avec des atomes froids de Rydberg [Phys. Rev. Applied 22, 044039 ; arXiv:2608.07260]. L'objectif de ce stage est d’explorer de nouvelles techniques de mesure des champs électromagnétiques avec des atomes froids de Rydberg dans des pinces optiques.
Intégré au sein de l'unité DPHY/SLM de l'ONERA, qui est un acteur mondialement reconnu des capteurs à base d'atomes froids, vous serez également amené(e) à interagir avec le département électromagnétisme et radar de l'ONERA ainsi qu'avec nos partenaires académiques et industriels
Contact
Sylvain Schwartz
24/09/2026
/
Thesis :
Funding :
96
Looking for potential variations of the proton-to-electron mass ratio and other tests of fundamental physics via precision measurements with molecules
Domaines
Quantum optics/Atomic physics/Laser
Metrology
Type of internship
Expérimental Description
This internship will focus on measuring mid-infrared molecular transitions of methanol (CH3OH), ammonia (NH3), and other molecules known for their enhanced sensitivity to changes in µ. The work will involve achieving subDoppler spectroscopic resolution to reach target laboratory frequency accuracies of ~100 Hz needed for comparisons with astronomical observations. This activity is part of the ANR Ultiµos project, a collaborative effort which seeks to refine current constraints on the possible variation of µ which involves leading research institutions, including Laboratoire Kastler Brossel (LKB, L. Hilico) and MONARIS (C. Janssen) at Sorbonne Université. The three partners of the Ultiµos consortium will collaborate to conduct measurements in different spectral windows, to identify transitions as targets for future Earth/space comparison campaigns, which could further tighten constraints on
variations of µ. Other collaborators, such as Vrije Universiteit Amsterdam and Onsala Space Observatory, will provide theoretical and observational/astronomical support to complement the experimental efforts.
Contact
Raphaël Hahn
23/09/2026
/
Thesis :
Funding :
97
High-Sensitivity Microwave Spectroscopy for Precision Measurements and Tests of Fundamental Physics
Domaines
Quantum optics/Atomic physics/Laser
Metrology
Type of internship
Expérimental Description
The master student will join the effort at LPL to develop a new-generation compact and versatile microwave (MW) spectrometer operating over the 2–20 GHz range. This instrument is conceived both as a high-sensitivity detector of internal quantum states in polyatomic molecules and as a precision tool for molecular frequency metrology. The spectrometer will enable cross-checks between MW rotational frequencies and mid-infrared (MIR) rovibrational data planned to be measured at the 100 Hz level in the frame of the ANR Ultiµos project. These comparisons are directly motivated by the search for potential variations of the proton-to-electron mass ratio µ, a fundamental constant whose stability can be tested by confronting laboratory data with MW astronomical spectra of molecules such as methanol and ammonia. These species possess transitions with strong sensitivity coefficients to µ, making them powerful probes of possible temporal or spatial variations of fundamental constants. In Ultiµos, spectroscopy with ultrastable MIR quantum cascade lasers provide ultra-precise MIR frequencies with relative uncertainties of 10 ¹². By using combination–difference schemes, these MIR data yield effective MW intervals that can be directly confronted with our SI-traceable MW measurements. Such dual determinations, based on entirely different experimental chains and affected by distinct systematic effects, are ideal for robust cross-validation of frequency values and uncertainty budgets.
Contact
Raphaël Hahn
23/09/2026
/
Thesis :
Funding :
98
Exploring non-Abelian geometric phases with mobile spins
Domaines
Condensed matter
Quantum information theory and quantum technologies
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
This project aims to perform direct measurements of non-Abelian geometric phases experienced by individual spins moving in materials with strong spin-orbit interaction. We will develop an experiment where single holes are displaced along closed loops inside 2D arrays of quantum dots in germanium at zero magnetic field. By studying the evolution of their spin states depending on the trajectory followed, we will evidence the non-Abelian geometric phases, study their properties and investigate their potential for quantum information processing.
Contact
Corentin Déprez
22/09/2026
/
Thesis :
Funding :
99
Toward 2D electron gases with strong spin-orbit coupling in crystalline metal- semiconductor heterostructures
Domaines
Condensed matter
Type of internship
Expérimental Description
The aim of this intership project and the following PhD thesis is to develop a strategy to preserve the strong Rashba effect in 2D heavy metallic layers on semiconducting surfaces and make use of these systems for spintronic applications. We will grow a dielectric capping material on the desired heavy metal in ultra-high vacuum environement, study the band structure of the heterostructures by ARPES and perform charge-spin conversion measurements by magneto-transport techniques.
Contact
Sergio Vlaic
21/09/2026
/
Thesis :
Funding :
100
The statistical physics of visual preference: What makes an image appealing?
Domaines
Statistical physics
Physics of living systems
Type of internship
Théorique, numérique Description
Why do some images feel visually compelling while others appear dull, chaotic or artificial? This internship will investigate whether aesthetic preference can be related to measurable statistical properties of images. Building on our previous work on structural complexity, multiscale relevance, and quantitative color harmony, we will combine large human-preference datasets with interpretable descriptors of image organisation to identify which visual structures are consistently associated with appeal.
Contact
Michael Benzaquen
21/09/2026
/
Thesis :
Funding :
101
Cooperation in hybrid human-AI populations: Can artificial agents reshape collective behaviour?
Domaines
Statistical physics
Physics of living systems
Non-equilibrium Statistical Physics
Type of internship
Théorique, numérique Description
As artificial agents become participants in social and economic interactions, even a small fraction of them may alter collective behaviour. This internship will investigate how cooperation emerges in populations containing both humans and artificial agents. Using empirical data from social-dilemma experiments together with simple statistical-physics and evolutionary-game models, we will ask when artificial agents stabilise cooperation, when they disrupt it, and which mechanisms control the transition between these regimes.
Contact
Michael Benzaquen
21/09/2026
/
Thesis :
Funding :
102
Quantum simulation of anyons
Domaines
Condensed matter
Low dimension physics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Quantum gases
Type of internship
Expérimental Description
We propose an internship to implement quantum simulation scenarios with ultra-cold dipolar excitons, confined in nanoscopic electrostatic lattices. This semiconductor platform has shown a high level of performance. It relies on electron-hole pairs that are optically injected in a double quantum well, where gate electrodes imprint electrostatic lattices confining excitons. Here, a route is introduced to realize anyonic excitations in the lattice. Anyons are strikingly marked by a fractional quantum statistics. They are theoretically accessible to dynamically varying lattices of dipolar excitons. following so-called Floquet engineering.
Contact
Francois Dubin
21/09/2026
/
Thesis :
Funding :
103
Cat qubits based on dc-biased Josephson junctions
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Expérimental et théorique Description
Cat qubits protect quantum information in hardware. Two coherent states of a microwave resonator are held in place by a dissipation that removes photons only in pairs, which suppresses bit flips exponentially with the cat size. This dissipation is usually activated by a microwave pump, which also turns on parasitic terms. We instead bias a Josephson junction with a dc voltage, so that Cooper pairs tunnel at a frequency selecting the useful process while every unwanted term averages to zero. We have just demonstrated this mechanism in Lyon with Alice & Bob. The internship consists in measuring the next circuit and turning this dissipation into a qubit, first a two-component cat imaged by Wigner tomography, then a four-component cat calling for a high-impedance memory.
Contact
Benjamin Huard
Laboratory : laboratoire de physique, ENS de Lyon - umr 5672
Team : ENS de Lyon, Physique
Team Website
Team : ENS de Lyon, Physique
Team Website
18/09/2026
/
Thesis :
Funding :
104
A superconducting qubit with built-in protection against errors
Domaines
Condensed matter
Quantum Machines
Quantum information theory and quantum technologies
Type of internship
Expérimental et théorique Description
Quantum processors correct their errors in software, at a cost of roughly a thousand physical qubits per useful logical one. A protected qubit works differently. Its two logical states are placed so far apart in phase space that no local noise can connect them. Errors are suppressed by the geometry of the circuit rather than corrected after the fact. We identified a new circuit that should solve the current roadblocks of previous attempts at making such a device. During the internship, you will measure and characterize the first version of that circuit.
Moreover, we recently experimentally demonstrated that it is possible to remove any charge offset drift in superconducting circuits, which would greatly improve the coherence time of our qubit. You will also contribute to the development of a new fabrication recipe that stabilizes the charge offset deterministically.
Contact
Benjamin Huard
Laboratory : laboratoire de physique, ENS de Lyon - umr 5672
Team : ENS de Lyon, Physique
Team Website
Team : ENS de Lyon, Physique
Team Website
18/09/2026
/
Thesis :
Funding :
105
Probing Short-Time Brownian Motion in 3D with Optical Traps
Domaines
Condensed matter
Statistical physics
Soft matter
Physics of liquids
Nonequilibrium statistical physics
Non-equilibrium Statistical Physics
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Expérimental Description
Push our optical trap toward a full 3D view of Brownian motion. Having proven we can track x(t) and y(t) under white light, cross-calibrated with our ultra-fast photodiode x(t) channel, join us to add a fast y(t) channel and a brand-new z(t) axis, the first steps toward a PhD probing particles near walls.
Contact
Julien BURGIN
17/09/2026
/
Thesis :
Funding :
106
Infrared electroluminescence from colloidal quantum dots
Domaines
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Colloidal Quantum Dots (CQDs) are size-tunable semiconductors. They received the Nobel Prize in 2023 after being integrated into displays thanks to their spectrally narrow luminescence. While visible CQDs are now commercially available, their infrared counterparts have not yet released their full potential, whereas the short-wave infrared range lacks efficient non-coherent sources. The project aims to explore the design of light-emitting diodes operating in the 1 to 5 µm range. The infrared light-emitting layer is sandwiched between charge injection layers that selectively inject electrons and holes. In the visible range, the quantum efficiency can be as high as 20%, but it quickly drops as longer wavelengths are targeted (1% at 1.3 µm and 0.1% at 2 µm) due to the lengthening of the radiative lifetime and inefficient shielding, which makes non-radiative processes dominant. Thus, new concepts need to be introduced to circumvent this drop in efficiency. The project will explore new concepts related to charge injection based on energy transfer and cascade effects as strategies to generate electrical gain. A second aspect of the project will relate to the design and fabrication of photonic structures to achieve better light outcoupling.
Contact
Emmanuel Lhuillier
17/09/2026
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Thesis :
Funding :
107
Nanocrystal-based infrared camera
Domaines
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Design of an infrared camera from colloidal quantum dots
Contact
Emmanuel Lhuillier
17/09/2026
/
Thesis :
Funding :
108
Imaging carrier transport in cross-sectional III-nitride LEDs
Domaines
Quantum optics/Atomic physics/Laser
Condensed matter
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
Light Emitting Diodes (LEDs) made of nitride materials are universally used for energy-efficient lighting. However, such LEDs suffer from drastic drops in efficiency at high current densities and high emission wavelengths (green to red), whose causes are still debated due to their complexity. Understanding them requires to access carrier behavior inside the active region of the LED itself, taking into account microscopic structuration and heterogeneities. Most approaches in the literature focus on spatially averaged measurements, missing out the core of the problem.
This project proposes to develop a novel approach to directly image carrier behavior (injection, recombination et escape) in the active region of an in operando LED. The aim is to perform a pump-probe electrical and optical excitation on a cleaved device observed in cross-section in a low energy electron microscope. This approach includes several challenging steps, among them the cleavage of an operating device for an observation in cross-section and the development of a mixed electrical and optical excitation of the LED under the microscope. Numerical modelling will be developed to support experimental findings.
Contact
Mylène Sauty
17/09/2026
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Thesis :
Funding :
109
Acousto-optic interaction for non-linear integrated mid-infrared photonics
Domaines
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
The goal of this internship is to develop and characterize nonlinear acousto-optic devices operating in the mid-infrared (wavelength of 3-8µm), leveraging broadband transparency and piezoelectricity of III-V semiconductor heterostructures. These devices will perform phase modulation, but also potentially on-chip optical routing, a pre-requisite for magnetic field-free optical isolation.
The internship will be mostly experimental, involving the use and development of two existing setups. The first one is a mid-IR integrated photonic bench allowing to characterize the operation of the devices (see above, right). The second one is a heterodyne interferometer, that allows to image the SAW-related vibration (amplitude and phase) of the sample surface to characterize the acoustic properties of the devices (see above, left).
Contact
Mathieu Jeannin
17/09/2026
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Thesis :
Funding :
110
Mode-locked mid-IR fiber laser combs enabled by semiconductor saturable non-linear mirrors
Domaines
Condensed matter
Low dimension physics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
Description
See pdf file for all the details
Extremely brief summary:
The goal of the internship is to develop and optimize mid-IR nonlinear mirrors, supported by recent results from the host team, that target comb operation of fiber lasers at lambda=3.5 and 4.6 um, and explore the mode locking regime. Our collaborators at CORIA/CNRS laboratory have developed these novel sources, and our SESAMs will enable their mode-locking operation
Contact
Raffaele Colombelli
17/09/2026
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Thesis :
Funding :
111
Ground-state cooling of multiple nanoparticles in optical levitation
Domaines
Quantum optics/Atomic physics/Laser
Nonequilibrium statistical physics
Quantum optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Optical levitation is a subfield of optomechanics, in which a nanoparticle is trapped in a vacuum at the focal spot of a microscope objective. Because levitated systems outperform other mechanical resonators, they offer the tantalizing prospect of investigating quantum mechanics at the mesoscale. To display quantum properties, the nanoparticle must be cooled down close to its ground state, which is typically achieved through the monitoring of its displacements and a modulation of the laser’s intensity. Currently, the most exciting endeavor in the field lays in performing levitation with many-body systems. Many-body levitation would offer the opportunity to observe effects for the first time, like the mesoscopic entanglement of nanoparticles. Sadly, conventional cooling techniques, cannot be multiplexed and fail badly to cool several elements in parallel.
Throughout this internship, the candidate will experimentally implement a new cooling technique intended to achieve the first-ever cooling of a many-body system composed of multiple nanoparticles in levitation. Compared to former strategies, here, a spatial light modulator is used to spatially shape the wavefront of the laser beam. Such a modulation enables to exert simultaneously adapted optical forces on all the nanoparticles in order to reduce their individual vibrational motions, which ultimately leads to the cooling of the many-body system. A funding is available to continue this internship through a PhD.
Contact
Nicolas Bachelard
15/09/2026
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Thesis :
Funding :
112
Ultra-fast mid-IR modulators for applications to frequency combs
Domaines
Condensed matter
Low dimension physics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
See pdf file for all the details
Extreme brief summary:
The goal of the internship is to develop electrically reconfigurable meta-surfaces whose optical properties, in reflection/ absorption, can be addressed electrically on ultra-fast timescales. In particular, we target ultra-fast amplitude modulators for the mid-infrared spectral range.
These developments are crucial for applications such as laser phase stabilization, spectroscopy, frequency comb generation, mode-locking, optical communications.
Contact
Raffaele Colombelli
14/09/2026
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Thesis :
Funding :
113
Shaping the polarization of light for tip-enhanced photoluminescence
Domaines
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
The goal of the internship is to develop an optical spectroscopy technique that is spatially resolved at the nanoscale, which is known as tip-enhanced photoluminescence (TEPL). This technique employs a laser beam focused onto the apex of a plasmonic metal tip (gold or silver) within an atomic force microscope (AFM) or scanning tunneling microscope (STM). To maximize the field enhancement effect at the tip apex, the focused beam must be radially polarized. To achieve this specific polarization, the intern will use a liquid-crystal polarization converter. The intern will then couple this beam to the plasmonic tip of an AFM or STM microscope, contribute to developing the software interface for controlling the optical detectors, and conduct TEPL experiments on semiconductor nanomaterial samples.
Contact
Eric Le Moal
14/09/2026
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Thesis :
Funding :
114
Chaotic graphs in silicon photonics
Domaines
Quantum optics/Atomic physics/Laser
Non-relativistic quantum field theory, quantum optics, complex quantum systems
Quantum information theory and quantum technologies
Quantum optics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Description
The objective of the internship and the thesis is to investigate the combined effect of nonlinearities and complex interferences in these optical graphs, particularly regarding the formation and dynamics of soliton states. In a second time, we will inject non-classical light (squeezed light or entangled photons) to test if entanglement is sensitive to chaos.
Contact
Mélanie Lebental
11/09/2026
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Thesis :
Funding :
115
Quantum plasmonic metamaterial time crystals
Domaines
Condensed matter
Quantum optics
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Non-linear optics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
Photonic time crystals -optical systems that are strongly and periodically modulated in time- have recently emerged as a novel paradigm for controlling light–matter interactions through temporal modulation, analogous to how conventional spatial photonic crystals manipulate light through spatial structuring. Building on our recent demonstration of a photonic time crystal using a plasmonic metamaterial operating at Terahertz frequencies, this internship aims to lay the groundwork for realizing a quantum plasmonic metamaterial time crystal, that is a photonic time crystal that can operate in the few-photon regime. This will require developing a Terahertz spectroscopy setup with extended frequency coverage as well as the design and characterization of advanced plasmonic metamaterials.
Contact
Yannis LAPLACE
Laboratory : Laboratoire des solides irradiés - UMR 7642
Team : New electronic states - TeraX-lab
Team Website
Team : New electronic states - TeraX-lab
Team Website
11/09/2026
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Thesis :
Funding :
116
Controlling the polarization of light with chiral plasmonic nanostructures
Domaines
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental Description
In this project we will (1) locally and electrically excite chiral plasmonic nanoparticles and (2) to use them to enhance the chiral properties of a new class of two-dimensional (2D) semiconductors called transition metal dichalcogenides (TMDCs), which are key for a new branch of physics and technology called valleytronics
Contact
Elizabeth Boer-Duchemin
10/09/2026
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Thesis :
Funding :
117
Brownian motion in complex environments
Domaines
Condensed matter
Statistical physics
Biophysics
Soft matter
Physics of liquids
Nonequilibrium statistical physics
Physics of living systems
Non-equilibrium Statistical Physics
Kinetic theory ; Diffusion ; Long-range interacting systems
Hydrodynamics/Turbulence/Fluid mechanics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type of internship
Expérimental et théorique Contact
Thomas Salez
09/09/2026
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Thesis :
Funding :