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arXiv · 1201.0444

Statistical physics of Bose-Einstein condensed light in a dye microcavity

Jan Klaers·Julian Schmitt·Tobias Damm·Frank Vewinger·Martin Weitz
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Abstract

We theoretically analyze the temperature behavior of paraxial light in thermal equilibrium with a dye-filled optical microcavity. At low temperatures the photon gas undergoes Bose-Einstein condensation (BEC), and the photon number in the cavity ground state becomes macroscopic with respect to the total photon number. Owing to a grandcanonical excitation exchange between the photon gas and the dye molecule reservoir, a regime with unusually large fluctuations of the condensate number is predicted for this system that is not observed in present atomic physics BEC experiments.

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Jan Klaers, Julian Schmitt, Tobias Damm, Frank Vewinger, Martin Weitz. 2012-05-15. Statistical physics of Bose-Einstein condensed light in a dye microcavity. https://doi.org/10.1103/physrevlett.108.160403

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