基于W态和Bell态的量子协议

Quantum Protocol Based on W State and Bell State

利用W态和Bell态组成的奇数粒子复合量子态,实现任意单量子和两量子比特完美隐形传输协议,稠密编码协议和量子秘密共享协议。对于隐形传输协议,给出发送方的测量基和接收方恢复信息的酉变换;对于稠密编码协议,只需要传输3个量子比特,就能够实现5个经典比特信息的传输。

The paper investigates an odd particle composite quantum state combined with W-state and Bell-state. It is shown that this composite quantum state can be used to prefect teleportation of arbitrary single and two qubit, and also can be commendably utilized for superdense coding and quantum state sharing. The paper presents the measurement basis of sender and unity operations of receiver for teleportation protocol. It is found that five classical bits can be sent by conveying only three quantum bits for superdense coding.