Deterministic Secure Direct Communication by Using Swapping Quantum Entanglement and Local Unitary Operations

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-Jun^1,2;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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MAN Zhong-Xiao, ZHANG Zhan-Jun, LI Yong 2005 Chin. Phys. Lett. 22 18-21

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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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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I1/018

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