Noise characterization for co-propagation of classical and CV-QKD signals over fiber and free-space link

João dos Reis Frazão; Vincent van Vliet; Kadir Gümüş; Menno van den Hout; Sjoerd van der Heide; Aaron Albores-Mejia; Boris Škorić; Chigo Okonkwo

arXiv · 2406.06540

Noise characterization for co-propagation of classical and CV-QKD signals over fiber and free-space link

João dos Reis Frazão·Vincent van Vliet·Kadir Gümüş·Menno van den Hout·Sjoerd van der Heide·Aaron Albores-Mejia·Boris Škorić·Chigo Okonkwo

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Abstract

Real-time CV-QKD receiver achieves peak 2.9 Mbit/s secret-key-rates over 12.8 km of fiber, while co-propagating 15 classical channels, separated 1 nm from the quantum signal. Performance degrades at higher launch powers due to crosstalk.

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João dos Reis Frazão, Vincent van Vliet, Kadir Gümüş, Menno van den Hout, Sjoerd van der Heide, Aaron Albores-Mejia, Boris Škorić, Chigo Okonkwo. 2024-04-25. Noise characterization for co-propagation of classical and CV-QKD signals over fiber and free-space link. https://arxiv.org/abs/2406.06540

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