中文

基于光子数分辨探测器和介观孪生光束态的量子通信混合判别策略

量子物理 2025-09-22 v2

摘要

态判别是量子通信协议实现中的关键挑战。大多数光通信协议依赖相干态光或脆弱的单光子态,使得同时实现鲁棒性和安全性往往很困难。在这项工作中,我们提出一种在介观强度区域运行的混合策略,利用鲁棒的量子态光。我们的方法结合了经典和量子特征:基于光的经典性质的可靠态判别,以及源自非经典关联的安全性。具体而言,接收端使用光子数分辨探测器来访问编码信息的二元热信号的平均光子数。通信信道利用孪生光束态——其本质上对窃听攻击敏感——来提供安全层。该策略具有可扩展性,可以方便地扩展到更复杂的信号字母表,并为介观强度领域的鲁棒安全量子通信提供了一条有前景的途径。

关键词

引用

@article{arxiv.2506.10160,
  title  = {Hybrid discrimination strategy in quantum communication based on photon-number-resolving detectors and mesoscopic twin-beam states},
  author = {Luca Razzoli and Alex Pozzoli and Alessia Allevi},
  journal= {arXiv preprint arXiv:2506.10160},
  year   = {2025}
}

备注

This is the Accepted Manuscript version of an article accepted for publication in "Quantum Science and Technology". IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. This Accepted Manuscript is published under a CC BY licence. The Version of Record is available online at https://doi.org/10.1088/2058-9565/ae05c3