Expérimental
Merging nonlinear optics and quantum hydrodynamics, quantum fluids of light have gained great interest in the past few years. Indeed, in properly engineered experimental optical devices, photons can acquire an effective mass and be in a fully controlled effective interaction. Merging nonlinear optics and quantum hydrodynamics, quantum fluids of light have gained great interest in the past few years. Indeed, in properly engineered experimental optical devices, photons can acquire an effective mass and be in a fully controlled effective interaction. They behave collectively as a quantum fluid, and share remarkable common features with other systems such as superfluidity and quantum turbulence. Quantum fluids of light have been investigated mainly in one and two dimensions in various photonic platforms. A major challenge in the field of quantum fluids of light is to increase its dimensions. An interesting strategy [2] is to consider ultrashort pulses rather than continuous propagation and combine both the instantaneous electronic Kerr effect with the slow photorefractive nonlinear effect [3]. [1] C. Michel et al, Nat. Commun. 9, 2108 (2018) [2] P.-\'E. Larr\'e et al, PRA 92, 043802 (2015) [3] O. Lahav et al, PRX 7, 041051 (2017)