新型设备无关量子密钥分配协议研究  

Research on new device-independent quantum key distribution protocol

作　　者：叶萌 徐立坤 黄观金 李建辉 刘云 YE Meng;XU Likun;HUANG Guanjin;LI Jianhui;LIU Yun(CSG Power Generation Company Information Communication Branch,Guangzhou 510700,China;Anhui Qasky Quantum Technology Co.Ltd.,Wuhu 241000,China)

机构地区：[1]南方电网调峰调频发电有限公司信息通信分公司,广东广州510700 [2]安徽问天量子科技股份有限公司,安徽芜湖241000

出　　处：《量子电子学报》2021年第1期45-49,共5页Chinese Journal of Quantum Electronics

摘　　要：设备无关量子密钥分配协议是近年来量子信息领域的重要问题之一,其安全性不依赖于理想的量子态制备和测量,从而可以有效避免强光致盲攻击和波长攻击等,因此具有更高的安全性。设备无关量子密钥分配协议的安全性基于贝尔不等式的违反,当违反值大于经典值时才可以产生安全密钥。基于α-CHSH不等式,在比特翻转信道模型下研究了设备无关量子密钥分配协议安全性,并给出了安全密钥率与α-CHSH不等式违反值之间的关系。Device-independent quantum key distribution protocol is one of the most important research directions in the field of quantum information theory in recent years.The security of this kind of protocols is not based on the perfect state preparation and measurement,thus it can be applied to avoid the blinding attack from intense light and the wavelength attack,which leads to higher security.Device-independent quantum key distribution protocols are based on the Bell inequality,and the classical value violation can be used to guarantee the security.Based onα-CHSH inequality,the security of device-independent quantum key distribution protocols is investigated in the bit flipped channel model,and the relationship between the final secret key rate with the violation value ofα-CHSH inequality is given.

关 键 词：量子通信 设备无关 量子密钥分发 安全 协议 不等式 

分 类 号：TN915.04[电子电信—通信与信息系统]