# Quantum soft filtering for the improved security analysis of the coherent one-way QKD protocol

@article{Kronberg2019QuantumSF, title={Quantum soft filtering for the improved security analysis of the coherent one-way QKD protocol}, author={D. Kronberg and Anna Sergeevna Nikolaeva and Y. Kurochkin and A. Fedorov}, journal={arXiv: Quantum Physics}, year={2019} }

A precise security analysis of practical quantum key distribution (QKD) systems is an important step for improving their performance. Here we consider a class of quantum soft filtering operations, which generalizes the unambiguous state discrimination (USD) technique. These operations can be applied as a basis for a security analysis of the original coherent one-way (COW) QKD protocol since their application interpolates between beam-splitting (BS) and USD attacks. We demonstrate that a zero… Expand

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