Side-channel-secure quantum key distribution

• URL: http://arxiv.org/abs/2305.08148v2
• Date: Sat, 20 May 2023 13:16:52 GMT
• Title: Side-channel-secure quantum key distribution
• Authors: Cong Jiang and Xiao-Long Hu and Zong-Wen Yu and Xiang-Bin Wang
• Abstract summary: We present a 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. We also present an improved method for SCS protocols which can raise the key rate by 1-2 orders of magnitude.
• Score: 0.9749560288448115
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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