Comment on "Inherent security of phase coding quantum key distribution systems against detector blinding attacks" [Laser Phys. Lett. 15, 095203 (2018)]
Aleksey Fedorov, Ilja Gerhardt, Anqi Huang, Jonathan Jogenfors, Yury, Kurochkin, Ant\'ia Lamas-Linares, Jan-{\AA}ke Larsson, Gerd Leuchs, Lars, Lydersen, Vadim Makarov, Johannes Skaar
TL;DR
This paper critiques a previous study on the security of phase coding quantum key distribution systems, identifying an error that undermines its main conclusions.
Contribution
It provides a critical analysis highlighting an error in the prior work, challenging its claims about system security.
Findings
Identified an error in the original security analysis.
Invalidates the conclusions of the previous study.
Highlights the need for more rigorous security proofs.
Abstract
This is a brief comment on the Letter by Balygin and his coworkers [Laser Phys. Lett. 15, 095203 (2018)]. We point out an error that invalidates the Letter's conclusions.
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