Quantum stochastic models of two-level atoms and electromagnetic cross sections

Details Quantum stochastic models of two-level atoms and electromagnetic cross sections Quantum stochastic models of two-level atoms and electromagnetic cross sections

1999-04-16

arxiv.org/abs/quant-ph/9904065v1

J.Math.Phys. 41 (2000) 7181-7205

Physics

Quantum Physics

18 pages, 3 Postscript figures, LaTeX

Scientific paper

10.1063/1.1289380

Quantum stochastic differential equations have been used to describe the dynamics of an atom interacting with the electromagnetic field via absorption/emission processes. Here, by using the full quantum stochastic Schroedinger equation proposed by Hudson and Parthasarathy fifteen years ago, we show that such models can be generalized to include other processes into the interaction. In the case of a two-level atom we construct a model in which the interaction with the field is due either to absorption/emission processes either to direct scattering processes, which simulate the interaction due to virtual transitions to the levels which have been eliminated from the description. To see the effects of the new terms, the total, elastic and inelastic eloctromagnetic cross sections are studied. The new power spectrum is compared with Mollow's results.

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