Expérimental et théorique
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.