面向量子密钥分布的宽带光学时域反射测量
量子物理
2025-07-25 v2 光学
摘要
In this paper, we present a method for security analysis against the Trojan-horse attacks (THA) launched to a practical fiber-based quantum key distribution (QKD) system across a wide spectral range. 为实现这一目标，我们利用光学时域反射测量（OTDR）进行近红外范围（1100-1800 nm）的光谱反射率分析，分辨率达到厘米级，噪声底座可降至-80 dB。最后，考虑该光谱范围内的光谱反射率和光致率数据，对THA侧信道进行总体理论安全分析。 To the best of our knowledge, our OTDR setup and the corresponding results are the first of their kind in a wide spectral range.
引用
@article{arxiv.2507.00159,
title = {Broadband optical time-domain reflectometry for security analysis of quantum key distribution},
author = {Klim D. Bondar and Ivan S. Sushchev and Daniil D. Bulavkin and Kirill E. Bugai and Anna S. Sidelnikova and Dmitriy M. Melkonian and Veronika M. Vakhrusheva and Dmitriy A. Dvoretskiy},
journal= {arXiv preprint arXiv:2507.00159},
year = {2025}
}
备注
10 pages, 6 figures