连续变量量子密钥分发系统的实际安全性分析  

Discussion on the Practical Security of Continuous Variable Quantum Key Distribution

作　　者：黄彪 李丽[1] HUANG Biao;LI Li(The 30th Institute of CETC,Chengdu Sichuan 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2019年第1期168-172,共5页Communications Technology

摘　　要：综述基于高斯调制相干态的连续变量量子密钥分发系统的实际安全性研究现状和发展趋势。基于高斯调制相干态的连续变量量子密钥分发系统在理论上被证明是无条件安全的,然而实际系统由于器件和信道的非理想特性而存在安全隐患。实际系统不仅受到多种系统过噪声的影响,而且还面临量子信道上各种边信道攻击的威胁。为提高实际系统的安全性,接收端实时散粒噪声测量和接收端本地制备本振光是今后两类重要的安全漏洞防御技术。The current research status and development trend of the actual security of continuous variable quantum key distribution systems based on Gaussian modulated coherent states are reviewed. Continuous variable quantum key distribution systems based on Gaussian modulated coherent states have theoretically proved to be unconditionally safe. However, actual systems have security risks due to the non-ideal characteristics of devices and channels. The actual system is not only affected by the noise of multiple systems, but also the threat of various side channel attacks on the quantum channel. In order to improve the security of the actual system, the real-time shot noise measurement at the receiving end and the local preparation of the local oscillator at the receiving end are two important types of security vulnerability prevention technologies in the future.

关 键 词：量子密钥分发 连续变量 相干态 高斯调制 边信道攻击 

分 类 号：TN918[电子电信—通信与信息系统]