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High-capacity three-party quantum secret sharing with superdense coding 被引量:2

High-capacity three-party quantum secret sharing with superdense coding
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摘要 This paper presents a scheme for high-capacity three-party quantum secret sharing with quantum superdense coding, following some ideas in the work by Liuet al (2002 Phys. Rev. A 65 022304) and the quantum secret sharing scheme by Deng et al (2008 Phys. Lett. A 372 1957). Instead of using two sets of nonorthogonal states, the boss Alice needs only to prepare a sequence of Einstei^Podolsky-l^osen pairs in d-dimension. The two agents Bob and Charlie encode their information with dense coding unitary operations, and security is checked by inserting decoy photons. The scheme has a high capacity and intrinsic efficiency as each pair can carry 21bd bits of information, and almost all the pairs can be used for carrying useful information. This paper presents a scheme for high-capacity three-party quantum secret sharing with quantum superdense coding, following some ideas in the work by Liuet al (2002 Phys. Rev. A 65 022304) and the quantum secret sharing scheme by Deng et al (2008 Phys. Lett. A 372 1957). Instead of using two sets of nonorthogonal states, the boss Alice needs only to prepare a sequence of Einstei^Podolsky-l^osen pairs in d-dimension. The two agents Bob and Charlie encode their information with dense coding unitary operations, and security is checked by inserting decoy photons. The scheme has a high capacity and intrinsic efficiency as each pair can carry 21bd bits of information, and almost all the pairs can be used for carrying useful information.
出处 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第11期4690-4694,共5页 中国物理B(英文版)
基金 Project supported by the National Natural Science Foundation (NSF) of China (Grant No 10847147) the NSF of Jiangsu Province, China (Grant No BK2008437) Jiangsu Provincial Universities (Grant No 07KJB510066) the Science Foundation of NUIST, China
关键词 quantum secret sharing three-party HIGH-CAPACITY superdense coding quantum secret sharing, three-party, high-capacity, superdense coding
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