Correlation functions and the AC Stark effect
- 21 February 1976
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 9 (3), L19-L24
- https://doi.org/10.1088/0022-3700/9/3/001
Abstract
A Heisenberg picture QED treatment is presented of the resonance fluorescence of a two-level atom. It is shown that the equations of motion for first-order correlation functions have an asymmetry with respect to the two time arguments. This asymmetry arises in a correct and careful evaluation of the unequal-time commutator between free-field and atomic operators. General solutions of these equations are found without going to the stationary limit.Keywords
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