Entanglement model for mode-pairing quantum key distribution
Mode-pairing (MP) quantum key distribution (QKD) eliminates the requirements of phase locking and phase tracking compared with twin field (TF) QKD while still surpassing the fundamental rate-distance limit of QKD. The complexity of the experimental implementation is reduced while the efficiency can...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.023102 |
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| _version_ | 1850041215194497024 |
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| author | Yi-Fei Lu Yang Wang Hong-Wei Li Mu-Sheng Jiang Xiao-Xu Zhang Ying-Ying Zhang Yu Zhou Xiao-Lei Jiang Hai-Tao Wang Yan-Mei Zhao Chun Zhou Wan-Su Bao |
| author_facet | Yi-Fei Lu Yang Wang Hong-Wei Li Mu-Sheng Jiang Xiao-Xu Zhang Ying-Ying Zhang Yu Zhou Xiao-Lei Jiang Hai-Tao Wang Yan-Mei Zhao Chun Zhou Wan-Su Bao |
| author_sort | Yi-Fei Lu |
| collection | DOAJ |
| description | Mode-pairing (MP) quantum key distribution (QKD) eliminates the requirements of phase locking and phase tracking compared with twin field (TF) QKD while still surpassing the fundamental rate-distance limit of QKD. The complexity of the experimental implementation is reduced while the efficiency can still be guaranteed. In MP-QKD, two communication parties need to pair two effective rounds according to the announced results by the third party. Therefore it is not intuitive how to provide an entanglement protocol equivalent to the prepare-and-measure protocol for proving security. At present, the security of MP-QKD is rigorously proven by examining the consistency of the states detailly between MP-QKD and the fixed-pairing scheme under all of Eve's possible interference to obtain the equivalence, and verifying the security of the latter. Here, we directly present an entanglement model for MP-QKD by proposing a free-pairing entanglement scheme that is equivalent to MP-QKD. This entanglement model simplifies the security proof and provides a clearer insight into the foundation of MP-QKD. Besides, it could provide a theoretical framework for the comprehensive analysis of MP-QKD, such as facilitating practical security analysis. Additionally, we propose an optimized pairing strategy based on the entanglement model. The simulation results show an enhancement of 163% in pairing efficiency with a reasonable pairing interval 2×10^{5}. |
| format | Article |
| id | doaj-art-be46e5b44ac847d998d9aa80f0972275 |
| institution | DOAJ |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-be46e5b44ac847d998d9aa80f09722752025-08-20T02:55:49ZengAmerican Physical SocietyPhysical Review Research2643-15642025-04-017202310210.1103/PhysRevResearch.7.023102Entanglement model for mode-pairing quantum key distributionYi-Fei LuYang WangHong-Wei LiMu-Sheng JiangXiao-Xu ZhangYing-Ying ZhangYu ZhouXiao-Lei JiangHai-Tao WangYan-Mei ZhaoChun ZhouWan-Su BaoMode-pairing (MP) quantum key distribution (QKD) eliminates the requirements of phase locking and phase tracking compared with twin field (TF) QKD while still surpassing the fundamental rate-distance limit of QKD. The complexity of the experimental implementation is reduced while the efficiency can still be guaranteed. In MP-QKD, two communication parties need to pair two effective rounds according to the announced results by the third party. Therefore it is not intuitive how to provide an entanglement protocol equivalent to the prepare-and-measure protocol for proving security. At present, the security of MP-QKD is rigorously proven by examining the consistency of the states detailly between MP-QKD and the fixed-pairing scheme under all of Eve's possible interference to obtain the equivalence, and verifying the security of the latter. Here, we directly present an entanglement model for MP-QKD by proposing a free-pairing entanglement scheme that is equivalent to MP-QKD. This entanglement model simplifies the security proof and provides a clearer insight into the foundation of MP-QKD. Besides, it could provide a theoretical framework for the comprehensive analysis of MP-QKD, such as facilitating practical security analysis. Additionally, we propose an optimized pairing strategy based on the entanglement model. The simulation results show an enhancement of 163% in pairing efficiency with a reasonable pairing interval 2×10^{5}.http://doi.org/10.1103/PhysRevResearch.7.023102 |
| spellingShingle | Yi-Fei Lu Yang Wang Hong-Wei Li Mu-Sheng Jiang Xiao-Xu Zhang Ying-Ying Zhang Yu Zhou Xiao-Lei Jiang Hai-Tao Wang Yan-Mei Zhao Chun Zhou Wan-Su Bao Entanglement model for mode-pairing quantum key distribution Physical Review Research |
| title | Entanglement model for mode-pairing quantum key distribution |
| title_full | Entanglement model for mode-pairing quantum key distribution |
| title_fullStr | Entanglement model for mode-pairing quantum key distribution |
| title_full_unstemmed | Entanglement model for mode-pairing quantum key distribution |
| title_short | Entanglement model for mode-pairing quantum key distribution |
| title_sort | entanglement model for mode pairing quantum key distribution |
| url | http://doi.org/10.1103/PhysRevResearch.7.023102 |
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