| Circular threshold quantum secret sharing |
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| 引用本文： | 杨宇光,温巧燕. Circular threshold quantum secret sharing[J]. 中国物理 B, 2008, 17(2): 419-423 |
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| 作者姓名： | 杨宇光 温巧燕 |
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| 作者单位： | College of Computer Science and Technology,Beijing University ofTechnology, Beijing 100022, China;State Key Laboratory of Information Security, GraduateSchool of Chinese Academy of Sciences, Beijing 100049, China;School of Science, Beijing University of Posts andTelecommunications, Beijing 100876, China |
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| 基金项目： | Project supported bythe National Basic Research Program of China (973 Program) (Grant No2007CB311100), the National High Technology Research and DevelopmentProgram of China (Grant Nos 2006AA01Z419 and 20060101Z4015), theMajor Research plan of the National Natural Science Foundation ofChina (Grant No 90604023), 2008 Scientific Research Common Programof Beijing Municipal Commission of Education, the ScientificResearch Foundation for the Youth of Beijing University ofTechnology (Grant No 97007016200701), the National ResearchFoundation for the Doctoral Program of Higher Education of China(Grant No 20040013007), the National Laboratory for ModernCommunications Science Foundation of China (Grant No9140C1101010601), and the Doctor Scientific Research ActivationFoundation of Beijing University of Technology (Grant No52007016200702). |
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| 摘 要： | This paper proposes a circular threshold quantum secret sharing （TQSS） scheme with polarized single photons. A polarized single photon sequence runs circularly among any t or more of n parties and any t or more of n parties can reconstruct the secret key when they collaborate. It shows that entanglement is not necessary for quantum secret sharing. Moreover, the theoretic efficiency is improved to approach 100% as the single photons carrying the secret key are deterministically forwarded among any t or more of n parties, and each photon can carry one bit of information without quantum storage. This protocol is feasible with current technology.
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| 关 键 词： | 量子秘密共享 阀值量子秘密共享 量子安全 高频率多路通信 |
| 收稿时间： | 2007-04-19 |
| 修稿时间： | 2007-05-28 |
Circular threshold quantum secret sharing |
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| Yang Yu-Guang and Wen Qiao-Yan. Circular threshold quantum secret sharing[J]. Chinese Physics B, 2008, 17(2): 419-423 |
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| Authors: | Yang Yu-Guang and Wen Qiao-Yan |
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| Affiliation: | College of Computer Science and Technology,Beijing University ofTechnology, Beijing 100022, China;State Key Laboratory of Information Security, GraduateSchool of Chinese Academy of Sciences, Beijing 100049, China; School of Science, Beijing University of Posts andTelecommunications, Beijing 100876, China |
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| Abstract: | This paper proposes a circular threshold quantum secret sharing(TQSS) scheme with polarized single photons. A polarized singlephoton sequence runs circularly among any $t$ or more of $n$ partiesand any $t$ or more of $n$ parties can reconstruct the secret keywhen they collaborate. It shows that entanglement is not necessaryfor quantum secret sharing. Moreover, the theoretic efficiency isimproved to approach 100{%} as the single photons carrying thesecret key are deterministically forwarded among any $t$ or more of$n$ parties, and each photon can carry one bit of information withoutquantum storage. This protocol is feasible with current technology. |
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| Keywords: | quantum secret sharing threshold quantum secret sharing quantum secure directcommunication |
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