Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method
Twin-field quantum key distribution (TF-QKD) has attracted considerable attention because it can exceed the basic rate-distance limit without quantum repeaters. Its variant protocol, sending or not-sending quantum key distribution (SNS-QKD), not only fixes the security vulnerability of TF-QKD, but a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/24/5/662 |
| _version_ | 1797500073450405888 |
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| author | Ke Xue Zhigang Shen Shengmei Zhao Qianping Mao |
| author_facet | Ke Xue Zhigang Shen Shengmei Zhao Qianping Mao |
| author_sort | Ke Xue |
| collection | DOAJ |
| description | Twin-field quantum key distribution (TF-QKD) has attracted considerable attention because it can exceed the basic rate-distance limit without quantum repeaters. Its variant protocol, sending or not-sending quantum key distribution (SNS-QKD), not only fixes the security vulnerability of TF-QKD, but also can tolerate large misalignment errors. However, the current SNS-QKD protocol is based on the active decoy-state method, which may lead to side channel information leakage when multiple light intensities are modulated in practice. In this work, we propose a passive decoy-state SNS-QKD protocol to further enhance the security of SNS-QKD. Numerical simulation results show that the protocol not only improves the security in source, but also retains the advantages of tolerating large misalignment errors. Therefore, it may provide further guidance for the practical application of SNS-QKD. |
| first_indexed | 2024-03-10T03:56:37Z |
| format | Article |
| id | doaj.art-f63d82d21df548b7af8f5ebc305ee5bc |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T03:56:37Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-f63d82d21df548b7af8f5ebc305ee5bc2023-11-23T10:55:20ZengMDPI AGEntropy1099-43002022-05-0124566210.3390/e24050662Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State MethodKe Xue0Zhigang Shen1Shengmei Zhao2Qianping Mao3Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210003, ChinaInstitute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210003, ChinaInstitute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210003, ChinaKey Lab of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing 210003, ChinaTwin-field quantum key distribution (TF-QKD) has attracted considerable attention because it can exceed the basic rate-distance limit without quantum repeaters. Its variant protocol, sending or not-sending quantum key distribution (SNS-QKD), not only fixes the security vulnerability of TF-QKD, but also can tolerate large misalignment errors. However, the current SNS-QKD protocol is based on the active decoy-state method, which may lead to side channel information leakage when multiple light intensities are modulated in practice. In this work, we propose a passive decoy-state SNS-QKD protocol to further enhance the security of SNS-QKD. Numerical simulation results show that the protocol not only improves the security in source, but also retains the advantages of tolerating large misalignment errors. Therefore, it may provide further guidance for the practical application of SNS-QKD.https://www.mdpi.com/1099-4300/24/5/662sending-or-not-sendingpassive decoy-statequantum key distribution |
| spellingShingle | Ke Xue Zhigang Shen Shengmei Zhao Qianping Mao Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method Entropy sending-or-not-sending passive decoy-state quantum key distribution |
| title | Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method |
| title_full | Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method |
| title_fullStr | Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method |
| title_full_unstemmed | Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method |
| title_short | Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method |
| title_sort | sending or not sending twin field quantum key distribution with a passive decoy state method |
| topic | sending-or-not-sending passive decoy-state quantum key distribution |
| url | https://www.mdpi.com/1099-4300/24/5/662 |
| work_keys_str_mv | AT kexue sendingornotsendingtwinfieldquantumkeydistributionwithapassivedecoystatemethod AT zhigangshen sendingornotsendingtwinfieldquantumkeydistributionwithapassivedecoystatemethod AT shengmeizhao sendingornotsendingtwinfieldquantumkeydistributionwithapassivedecoystatemethod AT qianpingmao sendingornotsendingtwinfieldquantumkeydistributionwithapassivedecoystatemethod |