Highly excited exciton-polariton condensates
arXiv:1707.02006 · doi:10.1103/PhysRevB.95.245122
Abstract
Exciton-polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BEC) for long lifetime systems, polariton condensates have a dynamical nonequilibrium feature owing to the similar physical structure that they have to semiconductor lasers. One of the distinguishing features of a condensate to a laser is the presence of strong coupling between the matter and photon fields. Irrespective of its equilibrium or nonequilibrium nature, exciton-polariton have been observed to maintain strong coupling. We show that by investigating high density regime of exciton-polariton condensates, the negative branch directly observed in photoluminescence. This is evidence that the present e-h-p system is still in the strong coupling regime, contrary to past results where the system reduced to standard lasing at high density.
arXiv comment5 pages
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Cited by in corpus (11)
- Interaction and coherence of a plasmon-exciton polariton condensate
- Observation of quantum depletion in a nonequilibrium exciton-polariton condensate
- Microscopic description of exciton-polaritons in microcavities
- Photoluminescence and gain/absorption spectra of a driven-dissipative electron-hole-photon condensate
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