中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1229-1232.doi: 10.1088/1009-1963/16/5/010

• GENERAL • 上一篇    下一篇

Secure deterministic communication in a quantum loss channel using quantum error correction code

吴双, 梁林梅, 李承祖   

  1. Department of Physics, School of Science, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2006-06-09 修回日期:2006-12-01 出版日期:2007-05-20 发布日期:2007-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No~10504042).

Secure deterministic communication in a quantum loss channel using quantum error correction code

Wu Shuang(吴双)† , Liang Lin-Mei(梁林梅), and Li Cheng-Zu(李承祖)   

  1. Department of Physics, School of Science, National University of Defense Technology, Changsha 410073, China
  • Received:2006-06-09 Revised:2006-12-01 Online:2007-05-20 Published:2007-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No~10504042).

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摘要： The loss of a quantum channel leads to an irretrievable particle loss as well as information. In this paper, the loss of quantum channel is analysed and a method is put forward to recover the particle and information loss effectively using universal quantum error correction. Then a secure direct communication scheme is proposed, such that in a loss channel the information that an eavesdropper can obtain would be limited to arbitrarily small when the code is properly chosen and the correction operation is properly arranged.

Abstract: The loss of a quantum channel leads to an irretrievable particle loss as well as information. In this paper, the loss of quantum channel is analysed and a method is put forward to recover the particle and information loss effectively using universal quantum error correction. Then a secure direct communication scheme is proposed, such that in a loss channel the information that an eavesdropper can obtain would be limited to arbitrarily small when the code is properly chosen and the correction operation is properly arranged.

Key words: quantum error correction, quantum loss channel, deterministic communication

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.65.Ta (Foundations of quantum mechanics; measurement theory) 03.67.Lx (Quantum computation architectures and implementations) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.67.Pp (Quantum error correction and other methods for protection against decoherence)