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Four-state quantum key distribution exploiting maximum mutual information measurement strategy

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Abstract

We propose a four-state quantum key distribution (QKD) scheme using generalized measurement of nonorthogonal states, the maximum mutual information measurement strategy. Then, we analyze the eavesdropping process in intercept–resend and photon number splitting attack scenes. Our analysis shows that in the intercept–resend and photon number splitting attack eavesdropping scenes, our scheme is more secure than BB84 protocol and has higher key generation rate which may be applied to high-density QKD.

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Acknowledgments

We thank Wei Chen for helpful suggestions. This work is supported by the Fundamental Research Funds for the Central Universities, Program for Key Science and Technology Innovative Research Team of Shaanxi Province, and the National Natural Science Foundation of China ( Grant Nos. 2013KCT-05, 11374008, 11174233, 11374238, and 11374239).

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Authors and Affiliations

  1. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Physics, Xi’an Jiaotong University, Xi’an, 710049, China

    Dong-Xu Chen, Pei Zhang, Hong-Rong Li, Hong Gao & Fu-Li Li

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  1. Dong-Xu Chen
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  2. Pei Zhang
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  3. Hong-Rong Li
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  4. Hong Gao
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  5. Fu-Li Li
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Correspondence to Pei Zhang.

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Chen, DX., Zhang, P., Li, HR. et al. Four-state quantum key distribution exploiting maximum mutual information measurement strategy. Quantum Inf Process 15, 881–891 (2016). https://doi.org/10.1007/s11128-015-1173-z

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  • DOI: https://doi.org/10.1007/s11128-015-1173-z

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