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arXiv · 2006.16543

Coherent detection schemes for subcarrier wave continuous variable quantum key distribution

Eduard Samsonov·Roman Goncharov·Maxim Fadeev·Alexandr Zinoviev·Daniil Kirichenko·Boris Nasedkin·Alexei Kiselev·Vladimir Egorov
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Abstract

We examine different methods to implement coherent detection in the subcarrier wave quantum key distribution (SCW QKD) systems. For classical wavefields, we present the models describing homodyne-type and heterodyne-type coherent detection schemes needed to extract information from the quadrature phase-coded multimode signals used in SCW QKD. Practical feasibility of the proposed schemes is corroborated by the experiments.

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Eduard Samsonov, Roman Goncharov, Maxim Fadeev, Alexandr Zinoviev, Daniil Kirichenko, Boris Nasedkin, Alexei Kiselev, Vladimir Egorov. 2020-06-30. Coherent detection schemes for subcarrier wave continuous variable quantum key distribution. https://doi.org/10.1364/josab.424516

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