2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105446Using well known duality between quantum maps and states of composite systems we introduce the notion of Schmidt number of a quantum channel. It enables one to define classes of quantum channels which partially break quantum entanglement. These classes generalize the well known class of entanglement breaking channels.9 pagesQuantum Physicstext