The Study Of Atomic Coherent Population Trapping Of The Interacting System Of The Atom And The Light

Atomic coherent population trappings of the interacting system of the light and the atom is an important topics of quantum optics because of its application in a number different contexts such as laser cooling,laser without inversion, electromagnetically induced transparency . In this paper ,we have studied atomic coherent population trappings in a cascade three-level atom interacting with a two-mode quantized field and a two-channel Laser-Induced Continuum Structure system, it mainly includes two aspects as the following:1. The atomic coherent population trappings of the interacting system of two梞ode laser field and a cascade three-level atomWe have studied atomic coherent population trapping in a cascade three-level atom interacting with a two-mode quantized field mediated by two-photon processes. The states of the field trapping the atom are obtained, which are two-mode SU(l,1) Schrodinger cat states, and the nonclassical properties of these states are discussed.2. The photoelectron energy spectra and the atomic coherent population trappings of a two梒hannel photoionization systemThe photoelectron energy spectra and the coherence population trapping of a two-channel photoionization system are studied. The results show that the energy spectra and the coherence trapping arenot only decided by the phase of the photoionization field, but also have a close relationship with the phase and the intensity of the modulated electromagnatic field.