Emission spectrum of a harmonically trapped Λ-type three-level atom

We theoretically investigate the emission spectrum for a Λ-type three-level atom trapped in the node of a standing wave. We show that the atomic center-of-mass motion not only directly affects the peak number, peak position, and peak height in the atomic emission spectrum, but also influences the effects of the cavity field and the atomic initial state on atomic emission spectrum.     

Atomic emission spectra and field non-classical properties

This paper studies the interaction of a Λ-type three-level atom with a single mode field.It discusses the emission spectrum characteristics of the Λ-type three-level atom driven by the photon-added coherent field.By means of the second-order degree of coherence,it shows some nonclassical properties of the cavity field,such as sub-Poissonian photonnumber distribution and the two-time intensity-intensity correlation which violates the Cauchy-Schwarz inequality.