Polariton condensates at room temperature
arXiv:1603.05093 · doi:10.1016/j.crhy.2016.07.002
Abstract
We review the recent developments of the polariton physics in microcavities featuring the exciton-photon strong coupling at room-temperature, and leading to the achievement of room-temperature polariton condensates. Such cavities embed active layers with robust excitons that present a large binding energy and a large oscillator strength, i.e. wide bandgap inorganic or organic semiconductors, or organic molecules. These various systems are compared, in terms of figures of merit and of common features related to their strong oscillator strength. The various demonstrations of polariton laser are compared, as well as their condensation phase diagrams. The room-temperature operation indeed allows a detailed investigation of the thermodynamic and out-of-equilibrium regimes of the condensation process. The crucial role of the spatial dynamics of the condensate formation is discussed, as well as the debated issue of the mechanism of stimulated relaxation from the reservoir to the condensate under non-resonant excitation. Finally the prospects of polariton devices are presented.
22 pages, 3 figures, 1 table
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- Microscopic description of exciton-polaritons in microcavities
- Dynamics of defect-induced dark solitons in an exciton-polariton condensate
- Strong coupling of exciton-polaritons in a bulk GaN planar waveguide: quantifiying the coupling strength
- Optically trapped exciton-polariton condensates in a perovskite microcavity
- Enwrapped Perylene Bisimide Enables Room Temperature Polariton Lasing and Photonic Lattices
- Near-critical dark opalescence in out-of-equilibrium SF
- Exciton-Polaritons in Hybrid Inorganic-organic Perovskite Fabry-Pérot Microcavity
- Bose condensation of squeezed light