通信学报2026，Vol.47Issue(1)：213-222,10.DOI:10.11959/j.issn.1000−436x.2026007
基于态区分检测器的连续变量量子密钥分发
Continuous variable quantum key distribution based on state-discrimination detector
摘要
Abstract
Aiming at the problem that the traditional coherent detector was limited by the standard quantum limit(SQL)in the continuous variable quantum key distribution(CVQKD)protocol,a CVQKD protocol based on state-discrimination detector(SDD),namely SDD-CVQKD,was proposed.The protocol replaced the traditional coherent de-tector with SDD,and used multi-round adaptive measurement and MAP criterion to achieve high-precision discrimina-tion of discrete modulated coherent states,which reduced the detection error probability.The security bounds were de-rived under the security model of reverse reconciliation and collective beam-splitting attack.Numerical simulation re-sults show that the proposed protocol is superior to the traditional CVQKD protocol in terms of channel parameters and secret key rate,and even exceeds the PLOB bound,showing higher security.关键词
量子密钥分发/连续变量/态区分检测器/自适应测量Key words
quantum key distribution/continuous variable/state-discrimination detector/adaptive measurement分类
信息技术与安全科学引用本文复制引用
廖骎,唐冲,杨俊跃,李君浩..基于态区分检测器的连续变量量子密钥分发[J].通信学报,2026,47(1):213-222,10.基金项目
国家自然科学基金资助项目(No.62101180) （No.62101180）
湖南省重点研发计划基金资助项目(No.2025QK3011) （No.2025QK3011）
中国工程科技发展战略湖南研究院战略研究与咨询基金资助项目(No.2025WK1001)The National Natural Science Foundation of China(No.62101180),The Key Research and Development Pro gram of Hunan Province(No.2025QK3011),The Monumental Consultation Project on the Development Strategy of Chinese Engi-neering and Technology(No.2025WK1001) （No.2025WK1001）
