中国物理B ›› 2020, Vol. 29 ›› Issue (3): 30303-030303.doi: 10.1088/1674-1056/ab695d

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Reference-frame-independent quantum key distribution with an untrusted source

Jia-Ji Li(李家骥), Yang Wang(汪洋), Hong-Wei Li(李宏伟), Wan-Su Bao(鲍皖苏)   

  1. 1 Henan Key Laboratory of Quantum Information and Cryptography, SSF IEU, Zhengzhou 450001, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2019-10-11 修回日期:2019-12-23 出版日期:2020-03-05 发布日期:2020-03-05
  • 通讯作者: Wan-Su Bao E-mail:bws@qiclab.cn
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2013CB338002) and the National Natural Science Foundation of China (Grant Nos. 61505261, 61675235, 61605248, and 11304397).

Reference-frame-independent quantum key distribution with an untrusted source

Jia-Ji Li(李家骥)1,2, Yang Wang(汪洋)1,2, Hong-Wei Li(李宏伟)1,2, Wan-Su Bao(鲍皖苏)1,2   

  1. 1 Henan Key Laboratory of Quantum Information and Cryptography, SSF IEU, Zhengzhou 450001, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2019-10-11 Revised:2019-12-23 Online:2020-03-05 Published:2020-03-05
  • Contact: Wan-Su Bao E-mail:bws@qiclab.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2013CB338002) and the National Natural Science Foundation of China (Grant Nos. 61505261, 61675235, 61605248, and 11304397).

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摘要： Reference frame independent quantum key distribution (RFI-QKD) allows two legitimate parties to share the common secret keys with the drift of reference frames. In order to reduce the actual requirements of RFI-QKD protocol on light source and make it more suitable for practical applications, this paper gives a specific description of RFI-QKD protocol with an untrusted source and analyzes the practical security of this protocol based on the two-way “plug and play” structure commonly used in practical systems. In addition, we also investigate the performance of RFI-QKD with an untrusted source considering statistical fluctuations based on Chernoff bound. Using simulations, we compare the secret key rate of RFI-QKD with an untrusted source to RFI-QKD with trusted source. The results show that the performance of RFI-QKD with an untrusted source is similar to that of RFI-QKD with trusted source, and the finite data size clearly effects the performance of our protocol.

关键词: quantum key distribution, reference frame independent, finite key, untrusted source

Abstract: Reference frame independent quantum key distribution (RFI-QKD) allows two legitimate parties to share the common secret keys with the drift of reference frames. In order to reduce the actual requirements of RFI-QKD protocol on light source and make it more suitable for practical applications, this paper gives a specific description of RFI-QKD protocol with an untrusted source and analyzes the practical security of this protocol based on the two-way “plug and play” structure commonly used in practical systems. In addition, we also investigate the performance of RFI-QKD with an untrusted source considering statistical fluctuations based on Chernoff bound. Using simulations, we compare the secret key rate of RFI-QKD with an untrusted source to RFI-QKD with trusted source. The results show that the performance of RFI-QKD with an untrusted source is similar to that of RFI-QKD with trusted source, and the finite data size clearly effects the performance of our protocol.

Key words: quantum key distribution, reference frame independent, finite key, untrusted source

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

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