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Finite-size fluctuations and photon statistics near the polariton condensation transition in a single-mode microcavity
EASTHAM, PAUL
We consider polariton condensation in a generalized Dicke model, describing a single-mode cavity containing quantum dots, and extend our previous mean-field theory to allow for finite-size fluctuations. Within the fluctuation-dominated regime the correlation functions differ from their trivial mean-field values. We argue that the low-energy physics of the model, which determines the photon statistics in this fluctuation-dominated crossover regime, is that of the quantum anharmonic oscillator. The photon statistics at the crossover are different in the high-temperature and low-temperature limits. When the temperature is high enough for quantum effects to be neglected we recover behavior similar to that of a conventional laser. At low enough temperatures, however, we find qualitatively different behavior due to quantum effects.
Keyword(s): Atomic, molecular and chemical physics; polariton
Publication Date:
2006
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: Trinity College Dublin
Citation(s): Eastham, PR, Littlewood, PB, Finite-size fluctuations and photon statistics near the polariton condensation transition in a single-mode microcavity, Physical Review B, 73, 2006, 085306
First Indexed: 2014-05-13 05:12:12 Last Updated: 2017-04-26 08:35:04