AI 中文总结
研究城域规模光纤网络的量子增强物理层威胁检测，采用将量子特征和经典信息嵌入同一光场的策略，利用CUSUM方法分析信号，经现场部署验证其可行性，建立了可将量子增强安全集成到大规模通信基础设施的框架。
AI 中文摘要
网络安全被广泛认为是量子技术的关键应用。然而，传统协议中量子与经典处理步骤需紧密协调，阻碍了其大规模部署，这种需求引入的强跨层相互依赖与现代通信网络中实现可扩展性的模块化分层架构冲突。本文提出一种替代策略，将所有量子干预限制在物理层，并与现有网络抽象透明兼容。通过使用明亮压缩光将量子特征和经典信息直接嵌入同一光场来实现。利用累积和（CUSUM）方法分析物理层信号以实现量子增强威胁检测。通过在城域规模光纤网络上的现场部署验证了该方法的实用性，并展示了物理层量子增强威胁检测实现的网络级安全功能。这些结果建立了一个实用、可扩展的框架，用于将量子增强安全无缝集成到大规模通信基础设施中。
英文摘要
Network security is widely recognized as a key application of quantum technology. However, its large-scale deployment is hindered by the need for tight coordination between fundamentally different quantum and classical processing steps in conventional protocols. This requirement introduces strong cross-layer interdependencies that conflict with the modular, layered architectures enabling scalability in modern communication networks. Here, we present an alternative strategy that confines all quantum interventions to the physical layer and remains transparently compatible with existing network abstractions. This is achieved by directly embedding quantum features and classical information within the same optical field using bright squeezed light. Physical-layer signals are analyzed using a cumulative sum (CUSUM) method to enable quantum-enhanced threat detection. We validate the practicality of this approach through field deployment over a metropolitan-scale fiber network and further demonstrate network-level security functionalities enabled by physical-layer quantum-enhanced thread detection. These results establish a practical, scalable framework for seamlessly integrating quantum-enhanced security into large-scale communication infrastructure.
Comments8 pages, 5 figures
