Broadband optical time-domain reflectometry for security analysis of quantum key distribution
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909703035944960 |
|---|---|
| author | Bondar, Klim D. Sushchev, Ivan S. Bulavkin, Daniil D. Bugai, Kirill E. Sidelnikova, Anna S. Melkonian, Dmitriy M. Vakhrusheva, Veronika M. Dvoretskiy, Dmitriy A. |
| author_facet | Bondar, Klim D. Sushchev, Ivan S. Bulavkin, Daniil D. Bugai, Kirill E. Sidelnikova, Anna S. Melkonian, Dmitriy M. Vakhrusheva, Veronika M. Dvoretskiy, Dmitriy A. |
| contents | 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. To achieve this, we utilize optical time-domain reflectometry (OTDR) for the spectral reflectance analysis in the near-infrared range 1100 - 1800 nm with centimeter-level resolution and with a noise floor down to -80 dB. Finally, the total theoretical-security analysis against the THA side channel considering the spectral reflectance and transmittance data over this spectral range is conducted. To the best of our knowledge, our OTDR setup and the corresponding results are the first of their kind in a wide spectral range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_00159 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Broadband optical time-domain reflectometry for security analysis of quantum key distribution Bondar, Klim D. Sushchev, Ivan S. Bulavkin, Daniil D. Bugai, Kirill E. Sidelnikova, Anna S. Melkonian, Dmitriy M. Vakhrusheva, Veronika M. Dvoretskiy, Dmitriy A. Quantum Physics Optics 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. To achieve this, we utilize optical time-domain reflectometry (OTDR) for the spectral reflectance analysis in the near-infrared range 1100 - 1800 nm with centimeter-level resolution and with a noise floor down to -80 dB. Finally, the total theoretical-security analysis against the THA side channel considering the spectral reflectance and transmittance data over this spectral range is conducted. To the best of our knowledge, our OTDR setup and the corresponding results are the first of their kind in a wide spectral range. |
| title | Broadband optical time-domain reflectometry for security analysis of quantum key distribution |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2507.00159 |