中国物理B ›› 2021, Vol. 30 ›› Issue (11): 110303-110303.doi: 10.1088/1674-1056/abf350

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Reference-frame-independent quantum key distribution of wavelength division multiplexing with multiple quantum channels

Zhongqi Sun(孙钟齐), Yanxin Han(韩雁鑫), Tianqi Dou(窦天琦), Jipeng Wang(王吉鹏), Zhenhua Li(李振华), Fen Zhou(周芬), Yuqing Huang(黄雨晴), and Haiqiang Ma(马海强)†   

  1. School of Science and State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2021-02-01 修回日期:2021-03-19 接受日期:2021-03-30 出版日期:2021-10-13 发布日期:2021-10-13
  • 通讯作者: Haiqiang Ma E-mail:hqma@bupt.edu.cn
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2019XD-A02), the State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications (BUPT) (Grant No. IPOC2021ZT10), and BUPT Innovation and Entrepreneurship Support Program (Grant No. 2021-YC-A315).

Reference-frame-independent quantum key distribution of wavelength division multiplexing with multiple quantum channels

Zhongqi Sun(孙钟齐), Yanxin Han(韩雁鑫), Tianqi Dou(窦天琦), Jipeng Wang(王吉鹏), Zhenhua Li(李振华), Fen Zhou(周芬), Yuqing Huang(黄雨晴), and Haiqiang Ma(马海强)†   

  1. School of Science and State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2021-02-01 Revised:2021-03-19 Accepted:2021-03-30 Online:2021-10-13 Published:2021-10-13
  • Contact: Haiqiang Ma E-mail:hqma@bupt.edu.cn
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2019XD-A02), the State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications (BUPT) (Grant No. IPOC2021ZT10), and BUPT Innovation and Entrepreneurship Support Program (Grant No. 2021-YC-A315).

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摘要： Reference-frame-independent quantum key distribution (RFI-QKD) can allow a quantum key distribution system to obtain the ideal key rate and transmission distance without reference system calibration, which has attracted much attention. Here, we propose an RFI-QKD protocol based on wavelength division multiplexing (WDM) considering finite-key analysis and crosstalk. The finite-key bound for RFI-QKD with decoy states is derived under the crosstalk of WDM. The resulting secret key rate of RFI-QKD, which is more rigorous, is obtained. Simulation results reveal that the secret key rate of RFI-QKD based on WDM is affected by the multiplexing channel number, as well as crosstalk between adjacent channels.

关键词: quantum key distribution, wavelength division multiplexing, secret key rate

Abstract: Reference-frame-independent quantum key distribution (RFI-QKD) can allow a quantum key distribution system to obtain the ideal key rate and transmission distance without reference system calibration, which has attracted much attention. Here, we propose an RFI-QKD protocol based on wavelength division multiplexing (WDM) considering finite-key analysis and crosstalk. The finite-key bound for RFI-QKD with decoy states is derived under the crosstalk of WDM. The resulting secret key rate of RFI-QKD, which is more rigorous, is obtained. Simulation results reveal that the secret key rate of RFI-QKD based on WDM is affected by the multiplexing channel number, as well as crosstalk between adjacent channels.

Key words: quantum key distribution, wavelength division multiplexing, secret key rate

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 03.67.-a (Quantum information)