  Considering two-level media in the array of weakly coupled nano-cavities, we
reveal a variety of dynamical regimes, such as diffusion, self-trapping,
soliton, and breathers for the wave-packets in the presence of photon tunneling
processes between the next-nearest cavities. We focus our attention on the low
branch (LB) bright polariton soliton formation, due to the two-body
polariton-polariton scattering processes. When detuning frequency is
manipulated adiabatically, the low-branch lattice polariton localized states,
i.e., that are solitons and breathers evolving between photon-like and
matter-like states, are shown to act as carriers for spatially distributed
storage and retrieval of optical information.
