Acta Sinica Quantum Optica
Decoherence Properties of a Two-level Atom Interacting with aThermal Radiation Field without Rotating Wave Approximation
Deng-Yu Zhang
Abstract
The interaction of a two-level atom with a thermal radiation field for single-photon processes and two-photon processes without rotating wave approximation is analysed. The atom's reduced density matrix is calculated when the quantum theory in small system coupled to thermal reservoir is used. The decoherence properties of atom is analyzed.[WT5HZ]