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.
Received: 08 October 2008
Revised: 11 November 2008
Accepted manuscript online:
(Entanglement measures, witnesses, and other characterizations)
Fund: 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.
Cite this article:
Gu Bin(顾斌), Li Chuan-Qi(李传起), and Chen Yu-Lin(陈玉林) Multiparty quantum secret conference based on quantum encryption with pure entangled states 2009 Chin. Phys. B 18 2137
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