%0 Journal Article %T Quantum self-induced transparency in frequency gap media %A Sajeev John %A Valery I. Rupasov %J Physics %D 1997 %I arXiv %R 10.1209/epl/i1999-00264-2 %X We study quantum effects of light propagation through an extended absorbing system of two-level atoms placed within a frequency gap medium (FGM). Apart from ordinary solitons and single particle impurity band states, the many-particle spectrum of the system contains massive pairs of confined gap excitations and their bound complexes - gap solitons. In addition, ``composite'' solitons are predicted as bound states of ordinary and gap solitons. Quantum gap and composite solitons propagate without dissipation, and should be associated with self-induced transparency pulses in a FGM. %U http://arxiv.org/abs/quant-ph/9709023v1