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New Quantum Private Comparison Protocol Using χ-Type State

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Abstract

We present a new quantum private comparison protocol based on the four-particle χ-type states. Different from previous protocols using the four-particle χ-type states, our protocol have some advantages. Without using the entangled character, we only need to prepare one type of χ-type state and N χ-type states. And we use the Pauli local unitary operation on particles to encode the information and to extract information by measurement. We also discuss that our protocol can withstand all various kinds of outside attacks and participant attacks.

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Acknowledgements

This paper is supported by the High Technology Research and Development Program of China (863 Program, 2011AA01A107); Beijing Municipal Special Fund for Cultural and Creative Industries (2009); the National “211” Development Fund for Key Engineering Programs; and the Beijing Municipal Natural Science Foundation (4112052).

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Authors and Affiliations

  1. School of Computer Science, Communication University of China, Beijing, 100024, China

    Wen Liu, Yong-Bin Wang, Zheng-Tao Jiang & Yi-Zhen Cao

  2. Information Center, Ministry of Science and Technology of the People’s Republic of China, Beijing, 100862, China

    Wei Cui

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  1. Wen Liu
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  2. Yong-Bin Wang
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  3. Zheng-Tao Jiang
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  4. Yi-Zhen Cao
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  5. Wei Cui
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Correspondence to Wen Liu.

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Liu, W., Wang, YB., Jiang, ZT. et al. New Quantum Private Comparison Protocol Using χ-Type State. Int J Theor Phys 51, 1953–1960 (2012). https://doi.org/10.1007/s10773-011-1073-7

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  • DOI: https://doi.org/10.1007/s10773-011-1073-7

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