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arXiv · 1001.4446

Heat pumping with optically driven excitons

Erik M. Gauger·Joachim Wabnig
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Abstract

We present a theoretical study showing that an optically driven excitonic two-level system in a solid state environment acts as a heat pump by means of repeated phonon emission or absorption events. We derive a master equation for the combined phonon bath and two-level system dynamics and analyze the direction and rate of energy transfer as a function of the externally accessible driving parameters. We discover that if the driving laser is detuned from the exciton transition, cooling the phonon environment becomes possible.

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Erik M. Gauger, Joachim Wabnig. 2010-06-07. Heat pumping with optically driven excitons. https://doi.org/10.1103/physrevb.82.073301

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