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Efficient quantum secret sharing scheme with two-particle entangled states |
| Zhu Zhen-Chao(朱珍超)a)b),Zhang Yu-Qing(张玉清)b)†,and Fu An-Min(付安民)a)b) |
| a Key Lab of Computer Networks and Information Security of Ministry of Education, Xidian University, Xi'an 710071, China; b National Computer Network Intrusion Protection Center, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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Abstract This paper proposes a protocol for multi-party quantum secret sharing utilizing four non-orthogonal two-particle entangled states following some ideas in the schemes proposed by Liu et al. (2006 Chin. Phys. Lett. 23 3148) and Zhang et al. (2009 Chin. Phys. B 18 2149) respectively. The theoretical efficiency for qubits of the new protocol is improved from 50% to approaching 100%. All the entangled states can be used for generating the private key except those used for the eavesdropping check. The validity of a probable attack called opaque cheat attack to this kind of protocols is considered in the paper for the first time.
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Received: 01 July 2010
Revised: 30 November 2010
Accepted manuscript online:
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PACS:
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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| Fund: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 90718007) and the National Natural Science Foundation of China (Grant Nos. 60773135 and 60970140). |
Cite this article:
Zhu Zhen-Chao(朱珍超), Zhang Yu-Qing(张玉清), and Fu An-Min(付安民) Efficient quantum secret sharing scheme with two-particle entangled states 2011 Chin. Phys. B 20 040306
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