QDKD Based on W State and Bell State Entanglement

Abstract

Abstract:

In order to improve the efficiency of key distribution, a quantum key distribution protocol based on W state and Bell state entanglement is proposed via quantum dense coding. In the scheme, the sender Alice code the key successfully via local unitary operations, and the receiver Bob obtain the key with jointing measurement, all states can be used to transmit messages except those choose for checking eavesdroppers, 5bits deterministic key are distributed by 5 particles. Security analysis result by using information theory shows that the scheme is secure, any eavesdroppers could be found in time.

Key words: 量子光学, 量子确定性密钥分发, 分发效率, 密集编码, 幺正操作

CLC Number:

O431.2

ZHUANSUN Shaoshuai, Chen Hong, Cai Xiaoxia. QDKD Based on W State and Bell State Entanglement[J]. J4, 2015, 32(2): 178-185.

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