中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2149-2153.doi: 10.1088/1009-1963/16/8/001

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Quantum secure direct communication with quantum encryption based on pure entangled states

李熙涵, 李春燕, 邓富国, 周萍, 梁玉洁, 周宏余   

  1. The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University,Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University,Beijing 100875, China;Beijing Radiation Center, Beijing 100875, China
  • 收稿日期:2006-11-07 修回日期:2006-11-21 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10604008 and 10435020) and the Beijing Education Committee (Grant No XK100270454).

Quantum secure direct communication with quantum encryption based on pure entangled states

Li Xi-Han(李熙涵)a)b)c), Li Chun-Yan(李春燕)a)b)c), Deng Fu-Guo(邓富国)a)b)c)†, Zhou Ping(周萍)a)b)c), Liang Yu-Jie(梁玉洁)a)b)c), and Zhou Hong-Yu(周宏余)a)b)c)   

  1. a The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China; b Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University, Beijing 100875, Chinac Beijing Radiation Center, Beijing 100875, China
  • Received:2006-11-07 Revised:2006-11-21 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10604008 and 10435020) and the Beijing Education Committee (Grant No XK100270454).

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摘要： This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the secret message carried by the travelling photons directly. For checking eavesdropping, the two parties perform the single-photon measurements on some decoy particles before each round. This scheme has the advantage that the pure entangled quantum signal source is feasible at present and any eavesdropper cannot steal the message.

关键词: quantum secure direct communication, quantum encryption, quantum key, pure entangled states

Abstract: This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the secret message carried by the travelling photons directly. For checking eavesdropping, the two parties perform the single-photon measurements on some decoy particles before each round. This scheme has the advantage that the pure entangled quantum signal source is feasible at present and any eavesdropper cannot steal the message.

Key words: quantum secure direct communication, quantum encryption, quantum key, pure entangled states

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Dd (Quantum cryptography and communication security) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Dv (Quantum state engineering and measurements)