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Quantum Private Comparison Protocol with W States

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Abstract

We propose a secure quantum protocol for comparing the equality of information with the help of a semi-honest third party (Trent). Our protocol utilizes the triplet W states, and the single-particle measurement. The technique for preparing W state is mature, which ensures the utility of our protocol. The security of our protocol with respect to both outsider attack and participant attack is discussed. Any information about the private information, the comparison result will not be leaked out, even the third party cannot know these information.

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Acknowledgements

This work is supported by NSFC (Grant Nos. 61272057, 61170270, 61100203, 61003286, 61121061), NCET (Grant No. NCET-10-0260), SRFDP (Grant No. 20090005110010), Beijing Natural Science Foundation (Grant Nos. 4112040, 4122054), the Fundamental Research Funds for the Central Universities (Grant No. 2011YB01), BUPT Excellent Ph.D. Students Foundation (Grant No. CX201325).

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Authors and Affiliations

  1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Wei-Wei Zhang, Dan Li & Yan-Bing Li

  2. State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, 100190, China

    Wei-Wei Zhang

  3. Beijing Electronic Science and Technology Institute, Beijing, 100070, China

    Yan-Bing Li

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  1. Wei-Wei Zhang
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  2. Dan Li
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  3. Yan-Bing Li
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Correspondence to Wei-Wei Zhang.

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Zhang, WW., Li, D. & Li, YB. Quantum Private Comparison Protocol with W States. Int J Theor Phys 53, 1723–1729 (2014). https://doi.org/10.1007/s10773-013-1970-z

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  • DOI: https://doi.org/10.1007/s10773-013-1970-z

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