COUPLED-CHANNEL QED MODEL AND ITS NONCLASSICAL FIELDS

We study the nonclassical properties of radiation in a unique exactly soluble three-mode cavity QED model, in which two channels exist for a tomic transitions. The atom-field interaction is the analog of Raman s cattering, and the three modes can be associated with pump, Stokes, an d anti-Stokes frequencies. By computing the correlation functions for the ''total field'' and the two-photon number correlation functions fo r certain initial states under various phase-shifted conditions, we de termine the time evolution of certain statistical properties of the fi eld. The three-mode P-function of tle field is also computed.