中国物理B ›› 2009, Vol. 18 ›› Issue (2): 435-439.doi: 10.1088/1674-1056/18/2/010

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Quantum secure direct communication with Greenberger--Horne--Zeilinger-type state (GHZ state) over noisy channels

张小龙1, 张月霞1, 魏华2   

  1. (1)Center for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China; (2)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;Graduate School of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2008-06-22 修回日期:2008-07-31 出版日期:2009-02-20 发布日期:2009-02-20
  • 基金资助:
    Project supported partly by the National Natural Science Foundation of China (Grant Nos 10774163, 10804132 and 10747167), the Natural Science Foundation Project of Chongqing, Chongqing Science and Technology Committee (CQ CSTC) (Grant No 2008BB0152) and p

Quantum secure direct communication with Greenberger--Horne--Zeilinger-type state (GHZ state) over noisy channels

Zhang Xiao-Long(张小龙)a)†, Zhang Yue-Xia(张月霞)a), and Wei Hua(魏华)b)c)   

  1. a Center for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China; b State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; c Graduate School of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2008-06-22 Revised:2008-07-31 Online:2009-02-20 Published:2009-02-20
  • Supported by:
    Project supported partly by the National Natural Science Foundation of China (Grant Nos 10774163, 10804132 and 10747167), the Natural Science Foundation Project of Chongqing, Chongqing Science and Technology Committee (CQ CSTC) (Grant No 2008BB0152) and p

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摘要： We propose a quantum error-rejection scheme for direct communication with three-qubit quantum codes based on the direct communication of secret messages without any secret key shared in advance. Given the symmetric and independent errors of the transmitted qubits, our scheme can tolerate a bit of error rate up to 33.1%, thus the protocol is deterministically secure against any eavesdropping attack even in a noisy channel.

关键词: quantum communication, GHZ state, quantum entanglement

Abstract: We propose a quantum error-rejection scheme for direct communication with three-qubit quantum codes based on the direct communication of secret messages without any secret key shared in advance. Given the symmetric and independent errors of the transmitted qubits, our scheme can tolerate a bit of error rate up to 33.1%, thus the protocol is deterministically secure against any eavesdropping attack even in a noisy channel.

Key words: quantum communication, GHZ state, quantum entanglement

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Pp (Quantum error correction and other methods for protection against decoherence) 03.67.Lx (Quantum computation architectures and implementations) 03.67.Dd (Quantum cryptography and communication security)