Non-Markovian correlation spectra and quantum stochastic trajectory analysis of spontaneous emission of an excited two-level atom

The derivation of non-Markovian correlation spectra of spontaneous emission of an excited two-level atom was reported including the effect of finite size of atom and all contributions of allowed multipole radiations. Quantum stochastic trajectory approach was used to analyze the emission process. The original system was expanded to an enlarged system with Markovian reservoirs to count the non-Markovian effect.EI04438101-4381096