Ghost Branch Photoluminescence From a Polariton Fluid Under Nonresonant Excitation
arXiv:1503.07402 · doi:10.1103/PhysRevLett.115.186401
Abstract
An expanding polariton condensate is investigated under pulsed nonresonant excitation with a small laser pump spot. Far above the condensation threshold we observe a pronounced increase in the dispersion curvature with a subsequent linearization of the spectrum and strong luminescence from a ghost branch orthogonally polarized with respect to the linearly polarized condensate emission. The presence of the ghost branch has been confirmed in time-resolved measurements. The dissipative and nonequilibrium effects in the photoluminescence of polariton condensates and their excitations are discussed.
13 pages, 4 figures
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- Interaction induced bi-skin effect in an exciton-polariton system
- Spontaneous and Superfluid Chiral Edge States in Exciton-Polariton Condensates
- Highly excited exciton-polariton condensates
- Photoluminescence and gain/absorption spectra of a driven-dissipative electron-hole-photon condensate
- Directional Goldstone waves in polariton condensates close to equilibrium
- Spinor polariton condensates under nonresonant pumping: Steady states and elementary excitations
- Bogoliubov excitations of a polariton condensate in dynamical equilibrium with an incoherent reservoir
- Spin polarized semimagnetic exciton-polariton condensate in magnetic field
- Direct observation of the quantum-fluctuation driven amplitude mode in a microcavity polariton condensate
- Photon-Pressure with an Effective Negative Mass Microwave Mode
- Finite-temperature Hatree-Fock-Bogoliubov theory for exciton-polaritons
- Interaction between an impurity and nonlinear excitations in a polariton condensate
- Drag force of a exciton-polariton condensate under non-resonant pumping
- Quantum hydrodynamics of a polariton fluid: pure energy relaxation terms
- Dark and thermal reservoir contributions to polariton sound velocity
- Collective excitations of exciton-polariton condensates in a synthetic gauge field