量子电子学报 ›› 2023, Vol. 40 ›› Issue (5): 738-746.doi: 10.3969/j.issn.1007-5461.2023.05.013

• 量子光学 • 上一篇    下一篇

基于GHZ态的多方半量子安全直接通信

郭瀚 , 李云霞 , 魏家华 *, 唐杰 , 王俊辉   

  1. ( 空军工程大学信息与导航学院, 陕西 西安 710077 )
  • 收稿日期:2021-06-17 修回日期:2021-07-17 出版日期:2023-09-28 发布日期:2023-09-28
  • 通讯作者: weijiahua@126.com E-mail:weijiahua@126.com
  • 作者简介:郭 瀚 ( 1997 - ), 女, 陕西西安人, 研究生, 主要从事量子通信方面的研究。E-mail: mimamany@qq.com
  • 基金资助:
    国家自然科学基金 (61971436)

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

GUO Han , LI Yunxia , WEI Jiahua *, TANG Jie , WANG Junhui   

  1. ( School of Information and Navigation, Air Force Engineering University, Xi'an 710077, China )
  • Received:2021-06-17 Revised:2021-07-17 Published:2023-09-28 Online:2023-09-28

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。

关键词: 量子通信, 半量子安全直接通信, GHZ 态, 多方通信

Abstract: 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.

Key words: quantum communication, semi-quantum secure direct communication, Greenberger–Horne– Zeilinger states, multi-party communication

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