Gain-induced trapping of microcavity exciton polariton condensates

Abstract

We have performed real and momentum space spectroscopy of exciton polariton condensates in a GaAs-based microcavity under non-resonant excitation with an intensity stabilized laser. An effective trapping mechanism is revealed, which is due to the stimulated scattering gain inside the finite excitation spot combined with the short lifetime. We observe several quantized modes while the lowest state shows Heisenberg-limited real and momentum space distributions. The experimental findings are qualitatively reproduced by an open dissipative Gross-Pitaevskii equation model.

4 pages, 5 figures

References in corpus (4)

• Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities
• Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
• Coherence properties of the microcavity polariton condensate
• Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light

Cited by in corpus (6)

• Creation of orbital angular momentum states with chiral polaritonic lenses
• Spatial Coherence Properties of One-Dimensional Exciton-Polariton-Condensates
• Highly excited exciton-polariton condensates
• Multistable circular currents of polariton condensates trapped in ring potentials
• Narrow-linewidth exciton-polariton laser
• Nonlinear emission dynamics of a GaAs microcavity with embedded quantum wells