  Leveraging the unique properties of quantum entanglement, quantum
entanglement distribution networks support multiple quantum information
applications and are essential to the development of quantum networks. However,
its practical implementation poses significant challenges to network
scalability and flexibility. In this work, we propose a novel reconfigurable
entanglement distribution network based on tunable multi-pump excitation of a
spontaneous four-wave mixing (SFWM) source and a time-sharing method. We
characterize the two-photon correlation under different pump conditions to
demonstrate the effect of pump degenerate and pump non-degenerate SFWM
processes on the two-photon correlation, and its tunability. Then as a
benchmark application, a 10-user fully-connected quantum key distribution (QKD)
network is established in a time-sharing way with triple pump lights. Each user
receives one frequency channel thus it shows a linear scaling between the
number of frequency channels and the user number in despite of the network
topology. Our results thus provide a promising networking scheme for
large-scale entanglement distribution networks owing to its scalability,
functionality, and reconfigurability.
