QUANTUM SECURE DIRECT COMMUNICATION WITHOUT USING PERFECT QUANTUM CHANNEL

Jian Wang (), Quan Zhang () and Chaojing Tang ()
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Jian Wang: School of Electronic Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China
Quan Zhang: School of Electronic Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China
Chaojing Tang: School of Electronic Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China

International Journal of Modern Physics C (IJMPC), 2006, vol. 17, issue 05, 685-692

Abstract: Most of the quantum secure direct communication protocol needs a pre-established secure quantum channel. Only after insuring the security of quantum channel, could the sender encode the secret message and send them to the receiver through the secure channel. In this paper, we present a quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs without insuring the security of quantum channel before transmitting the secret message. Compared with the protocol proposed by Denget al.[Phys. Rev. A68, 042317 (2003)] and the scheme proposed by Yanet al.[Euro. Phys. J. B41, 75 (2004)], the present protocol provides higher efficiency.

Keywords: Quantum secure direct communication; quantum key distribution; EPR pairs (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1142/S0129183106009011

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