中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2137-2142.doi: 10.1088/1674-1056/18/6/005

• GENERAL • 上一篇    下一篇

Multiparty quantum secret conference based on quantum encryption with pure entangled states

顾斌, 李传起, 陈玉林   

  1. College of Math and Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 收稿日期:2008-10-08 修回日期:2008-11-11 出版日期:2009-06-20 发布日期:2009-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10847147), the Natural Science Foundation of Jiangsu Province (Grant No BK2008437) and Jiangsu Provincial Universities (Grant No 07KJB510066) and the Science Foundation of Nanjing University of Information Science and Technology.

Multiparty quantum secret conference based on quantum encryption with pure entangled states

Gu Bin(顾斌)†, Li Chuan-Qi(李传起), and Chen Yu-Lin(陈玉林)   

  1. College of Math and Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:2008-10-08 Revised:2008-11-11 Online:2009-06-20 Published:2009-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10847147), the Natural Science Foundation of Jiangsu Province (Grant No BK2008437) and Jiangsu Provincial Universities (Grant No 07KJB510066) and the Science Foundation of Nanjing University of Information Science and Technology.

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摘要： We present a scheme for multiparty quantum remote secret conference (MQRSC) with pure entangled states, not maximally entangled multipartite quantum systems. The conferees first share a private quantum key, a sequence of pure entangled states and then use them to encode and decode the secret messages. The conferees exploit the decoy-photon technique to ensure the security of the transmission of qubits. This MQRSC scheme is more feasible and efficient than others.

Abstract: We present a scheme for multiparty quantum remote secret conference (MQRSC) with pure entangled states, not maximally entangled multipartite quantum systems. The conferees first share a private quantum key, a sequence of pure entangled states and then use them to encode and decode the secret messages. The conferees exploit the decoy-photon technique to ensure the security of the transmission of qubits. This MQRSC scheme is more feasible and efficient than others.

Key words: quantum secret conference, pure entangled states, quantum encryption

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Dd (Quantum cryptography and communication security) 03.67.Lx (Quantum computation architectures and implementations) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)