Degradation-aware Resilience Strategy for Quantum Key Distribution Co-existence With Classical Communication in Optical Networks

In this paper, we study a degradation-aware network resilience strategy for quantum key distribution (QKD) co-existence with classical communications. The secret key rate (SKR) can be improved by 96.4% on average with the proposed DS-QKD strategy in a wavelength division multiplexing (WDM) optical network with 40 wavelength channels.