Threshold quantum secret sharing between multi-party and multi-party |
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| Authors: | YuGuang Yang QiaoYan Wen |
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| Institution: | (1) College of Computer Science and Technology, Beijing University of Technology, Beijing, 100124, China;(2) State Key Laboratory of Integrated Services Network, Xidian University, Xi’an, 710071, China;(3) State Key Laboratory of Information Security (Graduate University of Chinese Academy of Sciences), Beijing, 100049, China;(4) State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China |
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| Abstract: | A threshold quantum secret sharing (TQSS) scheme between multi-party and multi-party was proposed using a sequence of single
photons, which is useful and efficient when the parties of communication are not all present. We described the process of
this TQSS scheme and discussed its security. It was shown that entanglement is not necessary for quantum secret sharing. Moreover,
the theoretic efficiency was improved to approach 100% as almost all the instances can be used for generating the private
key, and each photon can carry one bit of information. This protocol is feasible with the present-day technique.
Supported by the National Basic Research Program of China (973 Program)(Grant No. 2007CB311100), the National High-Technology
Research and Development Program of China (Grant Nos. 2006AA01Z419 and 2006AA01Z440), the Major Research Plan of the National
Natural Science Foundation of China (Grant No. 90604023), the Scientific Research Common Program of Beijing Municipal Commission
of Education (Grant No. KM200810005004), the Scientific Research Foundation for the Youth of Beijing University of Technology
(Grant No. 97007016200701), the Doctoral Scientific Research Activation Foundation of Beijing University of Technology (Grant
No. 52007016200702), the ISN Open Foundation, and the National Laboratory for Modern Communications Science Foundation of
China (Grant No. 9140C1101010601) |
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| Keywords: | threshold quantum secret sharing quantum cryptography single photon multi-party and multi-party |
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