中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1838-1842.doi: 10.1088/1009-1963/16/7/005

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An efficient quantum secure direct communication scheme with authentication

朱甫臣1, 杨宇光2, 温巧燕3   

  1. (1)National Key Laboratory for Modern Communications, Chengdu 610041, China; (2)School of Computer Science and Technology, Beijing University of Technology, Beijing 100022, China sj b) State Key Laboratory of Information Security (Graduate School of Chinese Academy of Sciences), Beijing 100022, China; (3)School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2006-04-28 修回日期:2006-05-16 出版日期:2007-07-20 发布日期:2007-07-04
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No~2006AA01Z419), the Major Research plan of the National Natural Science Foundation of China (Grant No~90604023), National Laboratory for Moderm Communica

An efficient quantum secure direct communication scheme with authentication

Yang Yu-Guang(杨宇光)a)b), Wen Qiao-Yan(温巧燕)c) , and Zhu Fu-Chen(朱甫臣)d)   

  1. a School of Computer Science and Technology, Beijing University of Technology, Beijing 100022, China; b State Key Laboratory of Information Security (Graduate School of Chinese Academy of Sciences), Beijing 100022, China; c School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China; d National Key Laboratory for Modern Communications, Chengdu 610041, China
  • Received:2006-04-28 Revised:2006-05-16 Online:2007-07-20 Published:2007-07-04
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No~2006AA01Z419), the Major Research plan of the National Natural Science Foundation of China (Grant No~90604023), National Laboratory for Moderm Communica

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摘要： In this paper an efficient quantum secure direct communication (QSDC) scheme with authentication is presented, which is based on quantum entanglement and polarized single photons. The present protocol uses Einstein--Podolsky--Rosen (EPR) pairs and polarized single photons in batches. A particle of the EPR pairs is retained in the sender's station, and the other is transmitted forth and back between the sender and the receiver, similar to the `ping--pong' QSDC protocol. According to the shared information beforehand, these two kinds of quantum states are mixed and then transmitted via a quantum channel. The EPR pairs are used to transmit secret messages and the polarized single photons used for authentication and eavesdropping check. Consequently, because of the dual contributions of the polarized single photons, no classical information is needed. The intrinsic efficiency and total efficiency are both 1 in this scheme as almost all of the instances are useful and each EPR pair can be used to carry two bits of information.

关键词: quantum key distribution, quantum authentication, quantum secure direct communication, non-orthogonal

Abstract: In this paper an efficient quantum secure direct communication (QSDC) scheme with authentication is presented, which is based on quantum entanglement and polarized single photons. The present protocol uses Einstein--Podolsky--Rosen (EPR) pairs and polarized single photons in batches. A particle of the EPR pairs is retained in the sender's station, and the other is transmitted forth and back between the sender and the receiver, similar to the `ping--pong' QSDC protocol. According to the shared information beforehand, these two kinds of quantum states are mixed and then transmitted via a quantum channel. The EPR pairs are used to transmit secret messages and the polarized single photons used for authentication and eavesdropping check. Consequently, because of the dual contributions of the polarized single photons, no classical information is needed. The intrinsic efficiency and total efficiency are both 1 in this scheme as almost all of the instances are useful and each EPR pair can be used to carry two bits of information.

Key words: quantum key distribution, quantum authentication, quantum secure direct communication, non-orthogonal

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Hk (Quantum communication) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 84.40.Ua (Telecommunications: signal transmission and processing; communication satellites)