Analytical treatment of the continuous wave driving of a two-level atom without making the rotating wave approximation
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2015 Taylor & Francis. In a straightforward manner, we utilize Floquet theory and adiabatic elimination to derive an analytic expression for a monochromatically driven two-level atom, without making the rotating wave approximation. We show that the counter-rotating terms dropped in the rotating wave approximation are responsible for three major effects. First an ac-Stark phase shift of the driven transition, second increased excited state population from far-detuned driving of the Lorentzian line, and third extra frequencies in the population dynamics that result in "wiggles." The analytic result agrees well with numerical simultations over a wide range of parameters.
author list (cited authors)
O'Brien, C., & Scully, M. O.
complete list of authors
O'Brien, Chris||Scully, Marlan O