Atomic Dipole Dynamics in the Thermal Quantized Cavity Field
Camilo Alberto Arancibia-Bulnes, S. M. Chumakov, J. J. Sánchez-Mondragón · Journal of Modern Optics · 1993
We consider the resonant interaction of a two-level atom with a thermal state of the quantized field in a lossless cavity. Non-trivial dynamics of the atomic dipole moment and the field quadrature components arise if the atom is initially prepared in a coherent superposition of its upper and lower states. In particular, the initial thermal field state acquires a well defined phase that corresponds to the initial phase of the superposition atomic state. Population trapping occurs when the intensity grows.