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Generic security analysis framework for quantum secure direct communication

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Abstract

Quantum secure direct communication provides a direct means of conveying secret information via quantum states among legitimate users. The past two decades have witnessed its great strides both theoretically and experimentally. However, the security analysis of it still stays in its infant. Some practical problems in this field to be solved urgently, such as detector efficiency mismatch, side-channel effect and source imperfection, are propelling the birth of a more impeccable solution. In this paper, we establish a new framework of the security analysis driven by numerics where all the practical problems may be taken into account naturally. We apply this framework to several variations of the DL04 protocol considering real-world experimental conditions. Also, we propose two optimizing methods to process the numerical part of the framework so as to meet different requirements in practice. With these properties considered, we predict the robust framework would open up a broad avenue of the development in the field.

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Acknowledgements

We would like to thank Jiawei Wu for his generous providing of the comparison data in Fig. 3 and thank Jie Lin for the help of the numerical techniques. This work was supported by the National Key Research and Development Program of China under Grant No. 2017YFA0303700, the Key Research and Development Program of Guangdong province under Grant No. 2018B030325002, the National Natural Science Foundation of China under Grant No. 11974205, and Beijing Advanced Innovation Center for Future Chip (ICFC).

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Authors and Affiliations

  1. State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China

    Zhang-Dong Ye, Dong Pan, Chun-Guang Du & Gui-Lu Long

  2. Frontier Science Center for Quantum Information, Beijing, 100084, China

    Liu-Guo Yin & Gui-Lu Long

  3. School of Information and Technology, Tsinghua University, Beijing, 100084, China

    Zhen Sun & Liu-Guo Yin

  4. Beijing National Research Center for Information Science and Technology, Beijing, 100084, China

    Liu-Guo Yin & Gui-Lu Long

  5. Beijing Academy of Quantum Information Sciences, Beijing, 100193, China

    Liu-Guo Yin & Gui-Lu Long

Authors
  1. Zhang-Dong Ye
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  2. Dong Pan
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  4. Chun-Guang Du
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  5. Liu-Guo Yin
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Corresponding authors

Correspondence to Liu-Guo Yin or Gui-Lu Long.

Additional information

arXiv: 2011.14546. This article can also be found at http://journal.hep.com.cn/fop/EN/10.1007/s11467-020-1025-x.

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Ye, ZD., Pan, D., Sun, Z. et al. Generic security analysis framework for quantum secure direct communication. Front. Phys. 16, 21503 (2021). https://doi.org/10.1007/s11467-020-1025-x

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