Schmidt decomposition in the interaction of a three-level atom and a quantized field Jorge A. Anaya-Contreras, Arturo Zúñiga-Segundo, Aldo Espinosa-Zúñiga, Francisco Soto-Eguibar and Héctor M. Moya-Cessa Eur. Phys. J. D, 72 10 (2018) 186 Published online: 23 October 2018 DOI: 10.1140/epjd/e2018-90331-4