使用可调光学减弱器对连续变量量子密钥分布进行同质检测器盲目攻击的防御
Yijun Wang1, Yanyan Li1, Wenqi Jiang1
1School of Automation, Central South University, Changsha 410083, China.
Entropy (Basel, Switzerland)
|June 26, 2025
概括
连续变量量子密钥分布 (CV-QKD) 面临来自同质检测器盲目的攻击的安全风险. 本研究引入了使用可调光学减弱器的实时反系统,以有效应对这些攻击.
科学领域:
- 量子信息科学 量子信息科学
- 电信安全 电信安全
- 光学物理学的光学物理学
背景情况:
- 连续变量量子密钥分布 (CV-QKD) 依赖于同质探测器,对于区分连贯状态至关重要.
- 理论上的CV-QKD安全性假设探测器线性,这实际上是有限的线性域所限制的.
- 同型检测器盲目的攻击利用这种线性限制来破坏CV-QKD的安全性.
研究的目的:
- 提出和验证 CV-QKD 中对同质检测器盲目的攻击的对策.
- 增强CV-QKD协议的实际安全性,特别是具有有限大小效应的协议.
- 解决因同体检测器的非理想线性性而产生的漏洞.
主要方法:
- 实现一个可调节的光学减弱器与反控制结构.
- 在CV-QKD数据处理过程中估计最佳衰减值.
- 在检测器之前,将衰减值的实时反应用于光学衰减器.
- 进行数值模拟,以评估对策的有效性.
主要成果:
- 拟议的对策有效地减轻了同质检测器盲目的攻击.
- 实时反确保探测器在其线性域内运行,防止和.
- 考虑到有限大小的效应,高斯模块化的连贯状态CV-QKD协议的安全性得到维护.
结论:
- 可调节的光学减弱器与反提供了强大的防御探测器盲目的攻击.
- 这种方法提高了CV-QKD系统的实际安全性和可靠性.
- 这些发现有助于量子通信技术的安全实施.
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