The Resonance Fluorescence Of A Two-level Atom In A Two-mode Cavity

Quantum optics is an important part of physics, and its main research is coherence of the light field, the quantum statistical properties of light field and the interaction quantum properties between light and matter. Atomic absorption characteristics of the wavelength of the light field radiation from lower state transition to upper state,and immediately launch the same wavelength of radiation, returned to the lower state, the wavelength of radiation is resonance fluorescence. Nonclassical features in the resonance fluorescence of a driven atom have been extensively explored in the past few decades. Many quantum features, such as photon antibunching, sub-Poissonian photon statistics, and squeezing, are related to resonance fluorescence. It can provide important theoretical support to study the properties of the atom and light field and the interaction of light with matter, through the study of atomic resonance fluorescence spectrum.Spectral line splitting is the basis of the study of four-wave mixing; Narrow spectral line has important value for precision measurement.In this paper, we will study the resonance fluorescence spectrum of a two-level atom in the dual-mode cavity field. We adopt Heisenberg-Langevin approach through the steady-state solution of computing systems, diffusion coefficient matrix and drift to get system resonance spectrum. In order to get a more clear physical mechanis-m,this paper uses the theory of dressed state. Under the influence of two-mode cavity,the fluorescence spectrum of the two-level atom has a structure of three peaks, and will show the peak splitting and narrowing of the sideband.