Quantum Information Protocols Based on Four-Wave Mixing Process in Atomic Ensemble

Compared with the classical system, quantum information protocol has great advantages in substantially improving the security, fidelity and capacity of information processing. Various quantum information protocols with diverse functionalities have been proposed and implemented. A multifunctional platform compatible with multiple different quantum information protocols based on rubidium atomic four-wave mixing process is introduced. Based on this multifunctional platform, the parallel 9-channel all-optical quantum teleportation, the partially disembodied quantum state transfer and optimal N -> M coherent state quantum cloning can be implemented. More importantly, the partially disembodied quantum state transfer protocol can link the all-optical quantum teleportation protocol and the optimal 1 -> M coherent state quantum cloning protocol. These quantum information protocols have potential applications in all optical quantum communication.