Quantum technology applications of exciton-polariton condensates

Exciton-polaritons are bosonic quasiparticles, consisting of a quantum superposition of an exciton and a microcavity photon. Exciton-polaritons have been observed to undergo Bose-Einstein condensation, where a macroscopic population of polaritons spontaneously emerges in a low-energy polariton state. Owing to the exquisite experimental control in microcavity resonator structure, strong non-linearities, and scalable and versatile platforms, exciton-polaritons offer a feasible alternative to observe unique quantum phenomena that is applicable towards quantum technologies. While having similarities to optical and ultracold atomic-based quantum technologies, polaritons offer novel possibilities, such as potential room temperature operation, incorportation of non-equilibrium physics, and strong non-linearities. Polariton condensates are attractive for future quantum technological applications such as quantum simulation, interferometry, information processing, and non-classical state generation, for example. Here, we review potential future technologies relating to quantum simulation and interferometry of exction-polariton condensates.