Statistical physics of bose-einstein-condensed light in a dye microcavity

Jan Klaers*, Julian Schmitt, Tobias Damm, Frank Vewinger, Martin Weitz

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

81 Citations (Scopus)


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, and the photon number in the cavity ground state becomes macroscopic with respect to the total photon number. Owing to a grand-canonical 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 Bose-Einstein condensation experiments.

Original languageEnglish
Article number160403
JournalPhysical review letters
Issue number16
Publication statusPublished - 20 Apr 2012
Externally publishedYes


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