2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93137We assert that state reduction processes in different types of photodetection experiments are described by using different kinds of ladder operators. A special model of discrete photodetection is developed by the use of superoperators which are based on the Susskind-Glogower raising and lowering operators.7 pages, no figures, REVTeXQuantum Physicstext