  Inspired by a recently observed asymmetry in the transmission of circularly
polarized light through a metamaterial, we present a non-hermitian PT-symmetric
quantum model to describe the interaction of the light fields in two resonant
cavities coupled via a 2D-chiral mirror. We compute the time evolution of the
light fields in this model, find two sets of operators compatible with the
hamiltonian in a delocalized representation, discover the energies of the
system and show that the transmission probability predicted by the model is
indeed asymmetric.
