2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89257The potentially attainable information capacity of a radiatively stable lambda-system, viewed as the input of a quantum information channel, is studied. The output of the channel is formed by the states of the photon field with optical excitation frequencies, which are created as a result of Raman pumping. The analysis is based on the notion of coherent information.7 pages, 2 figures, RevTeXQuantum Physicstext