Finite-size fluctuations and photon statistics near the polariton condensation transition in a single-mode microcavity
- Theory of Condensed Matter Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE (United Kingdom)
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.
- OSTI ID:
- 20787937
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 73, Issue 8; Other Information: DOI: 10.1103/PhysRevB.73.085306; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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