Chin. Phys. Lett.  2005, Vol. 22 Issue (1): 18-21    DOI:
Original Articles |
Deterministic Secure Direct Communication by Using Swapping Quantum Entanglement and Local Unitary Operations
MAN Zhong-Xiao1;ZHANG Zhan-Jun1,2;LI Yong3
1Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2School of Physics and Material Science, Anhui University, Hefei 230039 3Department of Physics, Centre China Normal University, Wuhan 430079
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Abstract A deterministic direct quantum communication protocol is proposed by using swapping quantum entanglement and local unitary operations. The present protocol is secure for the proof of the security of the present scheme, the same as that in the two-step protocol [Phys. Rev. A 68(2003)042317]. Additionally, the advantages and disadvantages of the present protocol is also discussed.
Keywords: 03.67.Hk      03.65.Ud     
Published: 01 January 2005
PACS:  03.67.Hk (Quantum communication)  
  03.65.Ud (Entanglement and quantum nonlocality)  
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MAN Zhong-Xiao, ZHANG Zhan-Jun, LI Yong 2005 Chin. Phys. Lett. 22 18-21
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http://cpl.iphy.ac.cn/       OR      http://cpl.iphy.ac.cn/Y2005/V22/I1/018
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