  In this paper, we consider quantum key distribution (QKD) in a quantum
network with both quantum repeaters and a small number of trusted nodes. In
contrast to current QKD networks with only trusted nodes and the true Quantum
Internet with only quantum repeaters, such networks represent a middle ground,
serving as near-future QKD networks. In this setting, QKD can be efficiently
and practically deployed, while providing insights for the future true Quantum
Internet. To significantly improve the key generation efficiency in such
networks, we develop a new dynamic routing strategy that makes routing
decisions based on the current network state, as well as evaluate various
classical/quantum post-processing techniques. Using simulations, we show that
our dynamic routing strategy can improve the key rate between two users
significantly in settings with asymmetric trusted node placement. The
post-processing techniques can also increase key rates in high noise scenarios.
Furthermore, combining the dynamic routing strategy with the post-processing
techniques can further improve the overall performance of the QKD network.
