Practical issues of twin-field quantum key distribution
Twin-field quantum key distribution(TF-QKD) protocol and its variants, such as phase-matching QKD, sending-or-not-sending QKD and no phase post-selection TF-QKD(NPP-TFQKD), are very promising for long-distance applications. However, there are still some gaps between theory and practice in these prot...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2019-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ab5a97 |
| _version_ | 1797750457240649728 |
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| author | Feng-Yu Lu Zhen-Qiang Yin Rong Wang Guan-Jie Fan-Yuan Shuang Wang De-Yong He Wei Chen Wei Huang Bing-Jie Xu Guang-Can Guo Zheng-Fu Han |
| author_facet | Feng-Yu Lu Zhen-Qiang Yin Rong Wang Guan-Jie Fan-Yuan Shuang Wang De-Yong He Wei Chen Wei Huang Bing-Jie Xu Guang-Can Guo Zheng-Fu Han |
| author_sort | Feng-Yu Lu |
| collection | DOAJ |
| description | Twin-field quantum key distribution(TF-QKD) protocol and its variants, such as phase-matching QKD, sending-or-not-sending QKD and no phase post-selection TF-QKD(NPP-TFQKD), are very promising for long-distance applications. However, there are still some gaps between theory and practice in these protocols. Concretely, a finite-key size analysis is still missing, and the intensity fluctuations are not taken into account. To address the finite-key size effect, we first give the key rate of NPP-TFQKD against collective attack in finite-key size region and then prove it can be against coherent attack. To deal with the intensity fluctuations, we present an analytical formula of 4-intensity decoy state NPP-TFQKD and a practical intensity fluctuation model. Finally, through detailed simulations, we show NPP-TFQKD can still keep its superiority of high key rate and long achievable distance. |
| first_indexed | 2024-03-12T16:33:00Z |
| format | Article |
| id | doaj.art-ea6a45b96990434597a43d0338ce698c |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:33:00Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-ea6a45b96990434597a43d0338ce698c2023-08-08T15:25:09ZengIOP PublishingNew Journal of Physics1367-26302019-01-01211212303010.1088/1367-2630/ab5a97Practical issues of twin-field quantum key distributionFeng-Yu Lu0Zhen-Qiang Yin1https://orcid.org/0000-0002-3486-3934Rong Wang2Guan-Jie Fan-Yuan3Shuang Wang4De-Yong He5Wei Chen6Wei Huang7Bing-Jie Xu8Guang-Can Guo9Zheng-Fu Han10CAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaScience and Technology on Communication Security Laboratory, Institute of Southwestern Communication, Chengdu, Sichuan 610041, People’s Republic of ChinaScience and Technology on Communication Security Laboratory, Institute of Southwestern Communication, Chengdu, Sichuan 610041, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaCAS Key Laboratory of Quantum Information, CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei 230026, People’s Republic of China; State Key Laboratory of Cryptology, PO Box 5159, Beijing 100878, People’s Republic of ChinaTwin-field quantum key distribution(TF-QKD) protocol and its variants, such as phase-matching QKD, sending-or-not-sending QKD and no phase post-selection TF-QKD(NPP-TFQKD), are very promising for long-distance applications. However, there are still some gaps between theory and practice in these protocols. Concretely, a finite-key size analysis is still missing, and the intensity fluctuations are not taken into account. To address the finite-key size effect, we first give the key rate of NPP-TFQKD against collective attack in finite-key size region and then prove it can be against coherent attack. To deal with the intensity fluctuations, we present an analytical formula of 4-intensity decoy state NPP-TFQKD and a practical intensity fluctuation model. Finally, through detailed simulations, we show NPP-TFQKD can still keep its superiority of high key rate and long achievable distance.https://doi.org/10.1088/1367-2630/ab5a97quantum key distributiontwin-field quantum key distributionfinite-key size effect |
| spellingShingle | Feng-Yu Lu Zhen-Qiang Yin Rong Wang Guan-Jie Fan-Yuan Shuang Wang De-Yong He Wei Chen Wei Huang Bing-Jie Xu Guang-Can Guo Zheng-Fu Han Practical issues of twin-field quantum key distribution New Journal of Physics quantum key distribution twin-field quantum key distribution finite-key size effect |
| title | Practical issues of twin-field quantum key distribution |
| title_full | Practical issues of twin-field quantum key distribution |
| title_fullStr | Practical issues of twin-field quantum key distribution |
| title_full_unstemmed | Practical issues of twin-field quantum key distribution |
| title_short | Practical issues of twin-field quantum key distribution |
| title_sort | practical issues of twin field quantum key distribution |
| topic | quantum key distribution twin-field quantum key distribution finite-key size effect |
| url | https://doi.org/10.1088/1367-2630/ab5a97 |
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