Luis Aina, Alfredo2023-06-202023-06-202001-051050-294710.1103/PhysRevA.63.052112https://hdl.handle.net/20.500.14352/59682©2001 The American Physical SocietyWe present different schemes for preparing and maintaining the quantum state of multilevel systems. This is achieved via a suitable combination of coherent trapping and the Zeno effect which serves to protect the prepared state against undesired jumps to other states.engjournal articlehttp://dx.doi.org/10.1103/PhysRevA.63.052112http://journals.aps.org/open access535Engineered reservoirsRadiation-fieldParadoxSuperpositionsDecoherenceInhibitionSystemsDecayÓptica (Física)2209.19 Óptica Física