Relative phase for a quantum field interacting with a two-level system

Luis Aina, AlfredoSánchez Soto, Luis Lorenzo2023-06-202023-06-201997-071050-294710.1103/PhysRevA.56.994https://hdl.handle.net/20.500.14352/59709© 1997 The American Physical Society. We would like to thank Professor J. Peřina, Professor V. Peřinová, and Dr. A. Lukš for discussions. It is a pleasure to acknowledge S. Sweeney for a careful reading of the manuscript.Several quantum descriptions of the relative phase between an atomic dipole and a one-mode electromagnetic field are examined. Positive-operator measures for this variable are derived from dipole and field-phase formalisms. They are analyzed and compared with an operator defined by a polar decomposition. Some examples of time evolution are discussed.engRelative phase for a quantum field interacting with a two-level systemjournal articlehttp://dx.doi.org/10.1103/PhysRevA.56.994http://journals.aps.org/open access535Jaynes-Cummings modelOptical-phaseDifference operatorDistributionsUncertaintyStatesLightAtomÓptica (Física)2209.19 Óptica Física