Revisiting controlled quantum secure direct communication using a non-symmetric quantum channel with quantum superdense coding

被引：0
|
作者：
Liu, Jun [1 ]
Liu, Yi-Min [2 ]
Xia, Yan [3 ]
Zhang, Zhan-Jun [1 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Key Lab Optoelect Informat Acquisit & Manipulat, Minist Educ China, Hefei 230039, Peoples R China
[2] Shaoguan Univ, Dept Phys, Shaoguan 512005, Peoples R China
[3] Dalian Univ Technol, Sch Phys & Optoelect, Dalian 116024, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2008年 / 49卷 / 04期
关键词：
quantum secure direct communication; quantum superdense coding; non-symmetric quantum channel;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Recently Xia and Song [Phys. Lett. A 364 (2007) 117] have proposed a controlled quantum secure direct communication (CQSDC) protocol. They claimed that in their protocol only with the help of the controller Charlie, the receiver Alice can successfully extract the secret message from the sender Bob. In this letter, first we will show that within their protocol the controller Charlie's role could have been excluded if it were not for their unreasonable design. We then revise the Xia-Song CQSDC protocol such that its original advantages are retained and the CQSDC can be really realized.
引用
收藏
页码：887 / 890
页数：4
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