Open AccessPractical security of quantum key distribution in the presence of side channels
Author(s) -
Denis Sych,
Alexander Duplinskiy,
D. V. Babukhin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1984/1/012001
Subject(s) - quantum key distribution , computer science , key (lock) , visibility , side channel attack , quantum , interference (communication) , implementation , quantum cryptography , electronic engineering , computer security , channel (broadcasting) , telecommunications , physics , cryptography , quantum mechanics , engineering , quantum information , optics , programming language
Security of quantum key distribution (QKD) is based on fundamental laws of quantum physics. However, the security of QKD implementations is at risk due to various deviations, called side channels, of the real device from the theoretical model. In this work, we discuss the practical ways to avoid the threat of side channels in QKD. We use interference visibility measurement for estimation of distinguishability of quantum signals, and show how to integrate it into the security proof. Our results paves the way towards the development of novel robust QKD schemes.