Yi-Fei Lu, Mu-Sheng Jiang, Yang Wang, Yan-Yang Zhou, Jia-Ji Li, Yu Zhou, Xiao-Lei Jiang, Hai-Long Zhang, Xiang Wang, Yuyao Guo, Linjie Zhou, Chun Zhou, Hong-Wei Li, Wan-Su Bao
{"title":"基于信号提取模型和优势蒸馏技术的容损量子密钥分配。","authors":"Yi-Fei Lu, Mu-Sheng Jiang, Yang Wang, Yan-Yang Zhou, Jia-Ji Li, Yu Zhou, Xiao-Lei Jiang, Hai-Long Zhang, Xiang Wang, Yuyao Guo, Linjie Zhou, Chun Zhou, Hong-Wei Li, Wan-Su Bao","doi":"10.1364/OE.540592","DOIUrl":null,"url":null,"abstract":"<p><p>Compared with traditional networks, quantum key distribution (QKD) offers the ultimate resources, allowing two remote users to share secret symmetric keys regardless of the capabilities of eavesdroppers. However, the widespread application of commercial QKD is still challenging due to the low photon detection efficiency and the extremely high transmission loss. Here we demonstrate a fully commercial phase-encoding QKD system using a signal extraction model and advantage distillation technology to suppress detector noise and perform real-time pre-error correction. 1.89 × 10<sup>-10</sup> in the asymptotic case and 7.43 × 10<sup>-12</sup> in the nonasymptotic case secret key bits per pulse are achieved with a total loss of 70.05 dB. This method not only increases the transmission loss tolerance but also provides a more realistic deployment of quantum communication.</p>","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41511-41523"},"PeriodicalIF":3.2000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Loss tolerance quantum key distribution based on the signal extraction model and advantage distillation technology.\",\"authors\":\"Yi-Fei Lu, Mu-Sheng Jiang, Yang Wang, Yan-Yang Zhou, Jia-Ji Li, Yu Zhou, Xiao-Lei Jiang, Hai-Long Zhang, Xiang Wang, Yuyao Guo, Linjie Zhou, Chun Zhou, Hong-Wei Li, Wan-Su Bao\",\"doi\":\"10.1364/OE.540592\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Compared with traditional networks, quantum key distribution (QKD) offers the ultimate resources, allowing two remote users to share secret symmetric keys regardless of the capabilities of eavesdroppers. However, the widespread application of commercial QKD is still challenging due to the low photon detection efficiency and the extremely high transmission loss. Here we demonstrate a fully commercial phase-encoding QKD system using a signal extraction model and advantage distillation technology to suppress detector noise and perform real-time pre-error correction. 1.89 × 10<sup>-10</sup> in the asymptotic case and 7.43 × 10<sup>-12</sup> in the nonasymptotic case secret key bits per pulse are achieved with a total loss of 70.05 dB. This method not only increases the transmission loss tolerance but also provides a more realistic deployment of quantum communication.</p>\",\"PeriodicalId\":19691,\"journal\":{\"name\":\"Optics express\",\"volume\":\"32 23\",\"pages\":\"41511-41523\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-11-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics express\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1364/OE.540592\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics express","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OE.540592","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Loss tolerance quantum key distribution based on the signal extraction model and advantage distillation technology.
Compared with traditional networks, quantum key distribution (QKD) offers the ultimate resources, allowing two remote users to share secret symmetric keys regardless of the capabilities of eavesdroppers. However, the widespread application of commercial QKD is still challenging due to the low photon detection efficiency and the extremely high transmission loss. Here we demonstrate a fully commercial phase-encoding QKD system using a signal extraction model and advantage distillation technology to suppress detector noise and perform real-time pre-error correction. 1.89 × 10-10 in the asymptotic case and 7.43 × 10-12 in the nonasymptotic case secret key bits per pulse are achieved with a total loss of 70.05 dB. This method not only increases the transmission loss tolerance but also provides a more realistic deployment of quantum communication.
期刊介绍:
Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.