Quantum secure direct communication without using perfect quantum channel

Details Quantum secure direct communication without using perfect quantum channel Quantum secure direct communication without using perfect quantum channel

2005-11-09

arxiv.org/abs/quant-ph/0511092v2

Int. J. Quant. Info., 2006, 4(6): 925-934

Physics

Quantum Physics

Scientific paper

10.1142/S0129183106009011

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. It is not necessary for the present protocol to insure the security of quantum channel before transmitting the secret message. In the present protocol, all Einstein-Podolsky-Rosen pairs are used to transmit the secret message except those chosen for eavesdropping check.

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