基于GHZ态的多方半量子安全直接通信  

Multi⁃party semi⁃quantum secure direct communication based on GHZ states

作　　者：郭瀚 李云霞[1] 魏家华[1] 唐杰 王俊辉 GUO Han;LI Yunxia;WEI Jiahua;TANG Jie;WANG Junhui(School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China)

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《量子电子学报》2023年第5期738-746,共9页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(61971436)。

摘　　要：量子安全直接通信不需要提前准备密钥,直接通过量子就可以进行秘密信息传递。针对量子通信设备成本较高的问题,基于Greenberger-Horne-Zeilinger(GHZ)态粒子和半量子理论,提出了一个双向三方的半量子安全直接通信(SQSDC)方案。该方案可以实现两个经典方和一个量子方之间的秘密通信,且通过调整GHZ态粒子的个数,可以将经典方扩展至任意多方,因此尤其适用于一个上级单位和多个下级单位之间的通信。方案安全性分析表明,利用GHZ态的纠缠特性进行窃听检测,可以有效地抵抗窃听者的截获测量重发攻击和纠缠测量攻击。在三方通信时,该方案的通信效率达17.65%,具有较高的通信效率。Quantum secure direct communication does not need to prepare the quantum keys in advance,and secret information can be transmitted directly through quantums.In order to solve the problem of high cost of quantum communication equipment,a bidirectional three-party semi-quantum secure direct communication(SQSDC)scheme was proposed based on Greenberger-Horne-Zeilinger(GHZ)state and semi-quantum theory.The scheme can realize the secret communication between two classical parties and a quantum party.By adjusting the number of GHZ particles,the classical party can be extended to any number of parties according to the scheme,making the scheme particularly suitable for the communication between one superior unit and several subordinate units.The security analysis shows that,using the entanglement characteristics of GHZ state for eavesdropping detection can effectively resist the attack of eavesdroppers.In three-party communication,the communication efficiency of the scheme is up to 17.65%,showing a high communication efficiency.

关 键 词：量子通信 半量子安全直接通信 GHZ态 多方通信 

分 类 号：O431.2[机械工程—光学工程]