  We consider a static wormhole as a waveguide and determine the conditions for
full transmission through the wormhole waveguide for a quantum particle with
zero angular momentum. We find that the waveguide is transparent when the de
Broglie wavelength of the quantum particle is an integer times twice the throat
diameter of the wormhole. Such an effect may be realizable in graphene,
plasmonic or optical wormholes.
