Resilience of Quantum Key Distribution Source Against Laser-Damage Attack by a Variety of Lasers

Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference. 2023. Article eb_p_14.

Ruzhitskaya D., Zhluktova I., Ponosova A., Trefilov D., Chaiwongkhot P., Huang A., Kamynin V., Makarov V.

Quantum key distribution (QKD) systems provide quantum-safe key exchange. Therefore, complete security analysis of implementations of QKD protocols is in the focus of interest of a worldwide information-security community. For today, a number of QKD loopholes are closed by countermeasures, which are also considered in emerging QKD security evaluation and certification [1–3]. However, new threats to practical QKD implementations are still found, such as the laser-damage attack, which is a powerful hacking strategy. In investigations, CW laser radiation is most often used, but in contrast to it, the interaction of pulsed laser radiation with optical materials may lead to a wide range of effects, like nonlinear effects, dielectric breakdown, etc.

Keywords: квантовая криптография, Quantum key distribution, quantum communications, квантовые коммуникации, квантовое распределение ключей, quantum cryptography