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Coexistence of C-band CV-QKD with Short-Reach O-band PAM-4 CWDM Links

Aboobackkar Sidhique, Cédric Bruynsteen, Axl Bomhals, Shengpu Niu, Jo Segaert, Jonathan Van Overmeir, Xin Liang Yin

Published Mar 24, 2025• 0 citations
Publisher

Abstract

We demonstrate the coexistence of a C-band CV-QKD link and an O-band short-reach 4x112 Gbps PAM-4 IM-DD link over a 2 km fiber. A real-time average secure key rate of 7.4 kbps is achieved during 3.5 hours of continuous operation.
DOI
10.36227/techrxiv.174284906.64133926/v1

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