基于纠缠交换和局域操作的量子秘密共享

doi:10.13190/jbupt.200504.74.qinsj

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (4): 74-77.doi: 10.13190/jbupt.200504.74.qinsj

基于纠缠交换和局域操作的量子秘密共享

秦素娟1,2，刘太琳3,1,温巧燕1

1北京邮电大学理学院, 北京 100876; 2西安电子科技大学综合业务网国家重点实验室, 西安 710071;  3山东财政学院, 济南 250014

出版日期:2005-08-28 发布日期:2005-08-28

Quantum Secret Sharing Based on Entanglement Swapping and Local Operation

QIN Sujuan1,2,LIU Tailin3,1,WEN Qiaoyan

1School of Sciences, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2State Key Laboratory of Integrated Services Network, Xidian University, Xi'an 710071, China; 3Shandong Finance Institute, Jinan 250014, China

Online:2005-08-28 Published:2005-08-28

摘要/Abstract

摘要：

为提高量子秘密共享的效率，提出了一种直接共享经典消息的协议. 协议充分利用了Bell态纠缠交换和局域操作的性质. 为了检测是否存在窃听者，通信粒子被分为检测和消息2部分，对检测部分采用共轭基测量的方法确保传输安全后，再对消息部分作局域操作编码. 分析表明该协议是安全的，效率可以达到2个Bell态共享2?bit经典消息.

关键词: 量子秘密共享, 纠缠交换, 量子密码

Abstract:

To improve the efficiency of quantum secret sharing, a protocol share the message directly among the users was proposed. The scheme made full use of entanglement swapping of Bell states and local operations. For detection of eavesdropping, the EPR pairs were divided into two parts: the checking parts and the encoding parts. After insuring the security of the quantum channel by measuring the checking particles in conjugate bases, the sender encoded her bits via the local unitary operations on the encoding parts. Investigation shows that the protocol is secure and two Bell states can be used to share two bits message.

Key words: quantum secret sharing, entanglement swapping, quantum cryptography

中图分类号:

TN918.1

秦素娟，刘太琳,温巧燕. 基于纠缠交换和局域操作的量子秘密共享[J]. 北京邮电大学学报, 2005, 28(4): 74-77.

QIN Sujuan1,2,LIU Tailin3,1,WEN Qiaoyan. Quantum Secret Sharing Based on Entanglement Swapping and Local Operation[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(4): 74-77.

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基于纠缠交换和局域操作的量子秘密共享

Quantum Secret Sharing Based on Entanglement Swapping and Local Operation

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