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Quantum Secure Direct Communication Without Using Perfect Quantum Channel

Author

Listed:
  • 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)

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.

Suggested Citation

  • Jian Wang & Quan Zhang & Chaojing Tang, 2006. "Quantum Secure Direct Communication Without Using Perfect Quantum Channel," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 17(05), pages 685-692.
    • Handle: RePEc:wsi:ijmpcx:v:17:y:2006:i:05:n:s0129183106009011
    DOI: 10.1142/S0129183106009011
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