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New scheme for measurement-device-independent quantum key distribution

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A Correction to this article was published on 22 November 2018

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Abstract

We propose a new scheme for measurement-device-independent quantum key distribution (MDI-QKD) with a two-mode state source. In this scheme, the trigger state is split into different paths and detected at both senders; thus, four types of detection events can be obtained. Based on these events, the signal state is divided into four non-empty sets that can be used for parameter estimation and key extraction. Additionally, we carry out a performance analysis on the scheme with two-intensity (vacuum state and signal state) heralded single-photon sources. We also numerically study the statistical fluctuation in the actual system. Our simulations show that the error rate and the secure transmission distance of our two-intensity scheme are better than those of existing three- and four-intensity MDI-QKD schemes with different light sources. Considering statistical fluctuations, the maximum secure distance of our scheme can reach 344 km when the data length is 1013 and remains as long as 250 km when the data length is 1010. Moreover, our scheme improves the system performance and reduces the challenges of implementing the system.

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  • 22 November 2018

    A measurement-device-independent quantum key distribution (MDI-QKD) scheme with passive heralded single-photon sources has previously been published [1], while the two-intensity MDI-QKD scheme with a two-mode source proposed in our paper can been regarded as the extension and further research of the work [1].

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Acknowledgements

We gratefully acknowledge the financial support from the National Natural Science Foundation of China through Grant No. 61302099.

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Authors and Affiliations

  1. Department of Electronic Engineering, Naval University of Engineering, Wuhan, 430033, China

    Lian Wang, Yuan-Yuan Zhou, Xue-Jun Zhou, Xiao Chen & Zheng Zhang

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  1. Lian Wang
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  2. Yuan-Yuan Zhou
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  3. Xue-Jun Zhou
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  4. Xiao Chen
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Correspondence to Yuan-Yuan Zhou.

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Wang, L., Zhou, YY., Zhou, XJ. et al. New scheme for measurement-device-independent quantum key distribution. Quantum Inf Process 17, 231 (2018). https://doi.org/10.1007/s11128-018-1991-x

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