Communication is essential in many areas of life, and protecting sensitive data is increasingly important. Photons, thanks to their speed and low susceptibility to interference, are ideal carriers for modern optical networks. When security is critical, inviolable channels are required. During the proposed internship, the student will work on a novel protocol that secures classical optical communication using entangled photon sources. The method hides a message within an apparently meaningless signal, ensuring protection through quantum physics. It is compatible with classical amplitude and phase modulation, as well as spatially encoded images, while avoiding the need for randomness generation or channel-quality verification required in current quantum protocols. Using nondegenerate photon pairs and requiring exclusive measurement of one photon ensures security even in the presence of an eavesdropper. The student will contribute to both the experimental implementation and the theoretical development of this secure quantum communication scheme.