The interesting part of "quantum communications" is the impact on security and surveillance. Does "quantum communications" even needs switches and routers? Backdoors don't seem to be possible...
Quantum communication works best if you have a direct connection, because the entanglement is easily destroyed if the particles interact with anything. This is the whole point, you can't intercept it without completely degrading the connection. If you try to redirect your particles through a network of switches and routers, be prepared for lots of dropped packets.
