Quantum key pool construction and key distribution scheme in multi-domain QKD optical networks (QKD-ON)

In this paper, we propose a multi-domain quantum key pool (QKP) capacity adaptive supplement scheme based on balance between key resource and routing hop in multi-domain QKD-ON, and we conduct the simulation and evaluate the performance of the proposed scheme in terms of service blocking probability and utilization of key resource. Results show that the algorithm can reduce service blocking probability.