基于线性光学元件的被动式诱骗态量子数字签名方案  

Passive decoy-state quantum digital signature scheme based on linear optical components

作　　者：范宇腾 索磊 张春辉 陈家明 王琴(导师)[1,2] FAN Yuteng;SUO Lei;ZHANG Chunhui;CHEN Jiaming;WANG Qin(Institute of Quantum Information Technology,College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Key Laboratory of Broadband Wireless Communication and Sensor Network Technology,Ministry of Education,College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院量子信息技术研究所,江苏南京210003 [2]南京邮电大学通信与信息工程学院宽带无线与传感网技术教育部重点实验室,江苏南京210003

出　　处：《量子电子学报》2021年第4期485-495,共11页Chinese Journal of Quantum Electronics

基　　金：国家重点研发计划,2018YFA0306400,2017YFA0304100;国家自然科学基金,11774180,61590932;南京邮电大学大学生创新创业训练计划项目,XZD2019010。

摘　　要：针对当前主动式诱骗态量子数字签名方案中光脉冲强度调制可能引起的脉冲宽度、频率信息泄漏等问题,提出了基于线性光学元件的被动式诱骗态量子数字签名方案。该方案通过使两束弱相干光源经过一个分束器并触发本地探测器,被动地构造出诱骗态来估计信道参数,进而开展量子数字签名的研究。该被动式诱骗态方案不仅能够避免多强度主动调制引起的这部分侧信道漏洞,提高系统的安全性,还能减弱在主动式诱骗态方案制备过程中产生的调制误差、强度起伏等效应的影响。To solve the problem of information leakage of pulse width and frequency possibly caused by pulse intensity modulation in current active decoy-state quantum digital signature scheme,a passive decoy-state quantum digital signature scheme based on linear optical components is proposed.In this scheme,decoy states are passively constructed to estimate channel parameters by making two weak coherent sources to pass a beam splitter and trigger the local detector,so that the research of quantum digital signature can be carried out.This passive decoy-state quantum digital signature scheme can not only avoid the side channel vulnerabilities caused by active pulse intensity modulation and improve the security of the system,but also weaken the effect of modulation error and intensity fluctuation generated in the preparation process of the active decoy-state scheme.

关 键 词：量子信息 被动式量子数字签名 被动式诱骗态 线性光学元件 

分 类 号：O431.2[机械工程—光学工程]