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arXiv · 2305.08148

Side-channel-secure quantum key distribution

Cong Jiang·Xiao-Long Hu·Zong-Wen Yu·Xiang-Bin Wang
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Abstract

We present a result of side-channel-secure (SCS) quantum key distribution (QKD) under fully realistic conditions. Our result is not only measurement-device independent but also effective with imperfect (and unstable) source devices including imperfect vacuum and imperfect coherent-state source. Applying the virtual mapping idea, we present a general security proof under whatever out-side-lab attack, including whatever side-channel coherent attack. As a byproduct, we also present an improved method for SCS protocols which can raise the key rate by 1-2 orders of magnitude. Using these results, we obtain a non-asymptotic key rate which is instantly useful with full realistic conditions.

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Cong Jiang, Xiao-Long Hu, Zong-Wen Yu, Xiang-Bin Wang. 2023-05-14. Side-channel-secure quantum key distribution. https://arxiv.org/abs/2305.08148

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