  Routing of photon play a key role in optical communication networks and
quantum networks. Although the quantum routing of signals has been investigated
in various systems both in theory and experiment, the general form of quantum
routing with multi-output terminals still needs to be explored. Here, we
propose an experimentally accessible tunable single-photon multi-channel
routing scheme using a optomechanics cavity coulomb coupling to a
nanomechanical resonator. The router can extract a single-photon from the
coherent input signal directly modulate into three different output channels.
More important, the two output signal frequencies can be selected by adjusting
Coulomb coupling strength. We also demonstrate the vacuum and thermal noise
will be insignificant for the optical performance of the single-photon router
at temperature of the order of 20 mK. Our proposal may have paved a new avenue
towards multi-channel router and quantum network.
