  We consider the lattice analog of a recently proposed continuum model for the
propagation of one- and two-photon states in a random medium. We find that
there is localization of single photons in an energy band centered at the
resonant energy of the atoms. Moreover, there is also localization of photons
at arbitrarily large energies. For the case of two photons, there is
localization in an energy band centered at twice the resonant frequency.
