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Issue:
Quantum Secret Sharing Based on Entanglement Swapping and Local Operation
Author(s):
QIN Su-juan
,
LIU Tai-lin
,
WEN Qiao-yan
Pages:
74
-
77
Year:
2005
Issue:
4
Journal:
JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
Keyword:
量子秘密共享
;
纠缠交换
;
量子密码
;
Abstract:
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.
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