1Henan Key Laboratory of Quantum Information and Cryptography, SSF IEU, Zhengzhou 450000, China
2CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China
3Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
4School of Information and Communication Engineering, Hainan University, Haikou 570228, China
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Abstract
In this work, we apply the advantage distillation method to improve the performance of a practical twin-field quantum key distribution system under collective attack. Compared with the previous analysis result given by Maeda, Sasaki and Koashi [Nature Communication 10, 3140 (2019)], the maximal transmission distance obtained by our analysis method will be increased from 420 km to 470 km. By increasing the loss-independent misalignment error to 12%, the previous analysis method can not overcome the rate-distance bound. However, our analysis method can still overcome the rate-distance bound when the misalignment error is 16%. More surprisingly, we prove that twin-field quantum key distribution can generate positive secure key even if the misalignment error is close to 50%, thus our analysis method can significantly improve the performance of a practical twin-field quantum key distribution system.
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Cited by
[1] Li-Wen Hu, Chun-Mei Zhang, and Hong-Wei Li, “Practical measurement-device-independent quantum key distribution with advantage distillation”, Quantum Information Processing 22 1, 77 (2023).
[2] Xin Liu, Di Luo, Zhenrong Zhang, and Kejin Wei, “Mode-pairing quantum key distribution with advantage distillation”, Physical Review A 107 6, 062613 (2023).
[3] Rui-Qiang Wang, Chun-Mei Zhang, Zhen-Qiang Yin, Hong-Wei Li, Shuang Wang, Wei Chen, Guang-Can Guo, and Zheng-Fu Han, “Phase-matching quantum key distribution with advantage distillation”, New Journal of Physics 24 7, 073049 (2022).
[4] Xiao-Lei Jiang, Yang Wang, Jia-Ji Li, Yi-Fei Lu, Chen-Peng Hao, Chun Zhou, and Wan-Su Bao, “Improving the performance of reference-frame-independent quantum key distribution with advantage distillation technology”, Optics Express 31 6, 9196 (2023).
[5] Jian-Rong Zhu, Chun-Mei Zhang, Rong Wang, and Hong-Wei Li, “Reference-frame-independent quantum key distribution with advantage distillation”, Optics Letters 48 3, 542 (2023).
[6] Hong-Wei Li, Rui-Qiang Wang, Chun-Mei Zhang, and Qing-Yu Cai, “Improving the performance of twin-field quantum key distribution with advantage distillation technology”, Quantum 7, 1201 (2023).
[7] Kailu Zhang, Jingyang Liu, Huajian Ding, Xingyu Zhou, Chunhui Zhang, and Qin Wang, “Asymmetric Measurement-Device-Independent Quantum Key Distribution through Advantage Distillation”, Entropy 25 8, 1174 (2023).
The above citations are from SAO/NASA ADS (last updated successfully 2023-12-25 17:07:29). The list may be incomplete as not all publishers provide suitable and complete citation data.
On Crossref’s cited-by service no data on citing works was found (last attempt 2023-12-25 17:07:28).
This Paper is published in Quantum under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Copyright remains with the original copyright holders such as the authors or their institutions.
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