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arXiv · 1211.5665

Markovian Master Equation and Thermodynamics of Two-level System in Strong Laser Field

K. Szczygielski·D. Gelbwaser-Klimovsky·R. Alicki
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Abstract

The recently developed technique combining the weak coupling limit with the Floquet formalism is applied to a model of two-level atom driven by a strong laser field and weakly coupled to heat baths. Firstly, the case of a single electromagnetic bath at zero temperature is discussed and the formula for resonance fluorescence is derived. The expression describes the well-known Mollow triplet, but its details differ from the standard ones based on additional simplifying assumptions. The second example describes the case of two thermal reservoirs: an electromagnetic one at finite temperature and the second dephasing one, which can be realized as a phononic or buffer gas reservoir. It is shown using the developed thermodynamical approach that the latter system can work in two regimes depending on the detuning sign: a heat pump transporting heat from the dephasing reservoir to an electromagnetic bath or can heat both, always at the expense of work supplied by the laser field.

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K. Szczygielski, D. Gelbwaser-Klimovsky, R. Alicki. 2012-11-24. Markovian Master Equation and Thermodynamics of Two-level System in Strong Laser Field. https://doi.org/10.1103/physreve.87.012120

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