Unbalanced-basis-misalignment tolerant measurement-device-independent quantum key distribution

• URL: http://arxiv.org/abs/2108.12088v4
• Date: Thu, 4 Aug 2022 01:18:44 GMT
• Title: Unbalanced-basis-misalignment tolerant measurement-device-independent quantum key distribution
• Authors: Feng-Yu Lu, Ze-Hao Wang, Zhen-Qiang Yin, Shuang Wang, Rong Wang, Guan-Jie Fan-Yuan, Xiao-Juan Huang, De-Yong He, Wei Chen, Zheng Zhou, Guang-Can Guo, Zheng-Fu Han
• Abstract summary: Measurement-device-independent quantum key distribution (MDIQKD) is a revolutionary protocol since it is physically immune to all attacks on the detection side. Some protocols release part of the assumptions in the encoding system to keep the practical security, but the performance would be dramatically reduced. We present a MDIQKD protocol that requires less knowledge of encoding system to combat the troublesome modulation errors and fluctuations.
• Score: 22.419105320267523
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Measurement-device-independent quantum key distribution (MDIQKD) is a revolutionary protocol since it is physically immune to all attacks on the detection side. However, the protocol still keeps the strict assumptions on the source side that the four BB84-states must be perfectly prepared to ensure security. Some protocols release part of the assumptions in the encoding system to keep the practical security, but the performance would be dramatically reduced. In this work, we present a MDIQKD protocol that requires less knowledge of encoding system to combat the troublesome modulation errors and fluctuations. We have also experimentally demonstrated the protocol. The result indicates the high-performance and good security for its practical applications. Besides, its robustness and flexibility exhibit a good value for complex scenarios such as the QKD networks.

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