Interaction of self-induced transparency pulses with surface Anderson localizations of light

We consider a one-dimensional photonic crystal embedded in a two-level medium with various degrees of disorder, such that the tail of localized states in the forbidden gap is resonant with self-induced transparency pulses, which can propagate in the absorbing system. We theoretically and numerically predict that the SIT pulse not only is slowed down by the disorder, but, at high scattering strengths, it is trapped by coupling with Anderson states located in proximity of the cavity surface. We develop a perturbative analysis to address the role of the random perturbation on the propagation of a 2π pulse in a two level medium.