Phys. Rev. A 64, 043810 (2001) [9 pages]Non-Markovian correlation spectra and quantum stochastic trajectory analysis of spontaneous emission of an excited two-level atomReceived 11 January 2001; revised 30 April 2001; published 18 September 2001 The non-Markovian correlation spectra of spontaneous emission of an excited two-level atom are derived including the effect of finite size of the atom and all the possible contribution of allowed multipole radiations. The emission process is then analyzed by the quantum stochastic trajectory approach. The non-Markovian effect is counted in by expanding the original system to an enlarged system with Markovian reservoirs. In the case of a hydrogenlike atom with large atomic number Z, the deviation from the Weisskopf-Wigner result is quite evident. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.64.043810
DOI:
10.1103/PhysRevA.64.043810
PACS:
42.50.Ct, 42.50.Lc
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