Capacity and SKR tradeoff in coexisting classical and CV-QKD metropolitan-reach optical links
Authors
Cagla Ozkan, Lucas Alves Zischler, Kadir Gumus, Joao dos Reis Frazao, Cristian Antonelli, Chigo Okonkwo
Abstract
We demonstrate power-regime-dependent guardband optimization for quantum-classical coexistence in metropolitan DWDM. Quantum channel at band-edge with 100-150 GHz guardbands achieves 108% SKR improvement at -1.5 dBm/ch, incurring 3.4% capacity loss versus 6.8% for band-center.
