Gain-induced trapping of microcavity exciton polariton condensates

Details Gain-induced trapping of microcavity exciton polariton condensates Gain-induced trapping of microcavity exciton polariton condensates

2010-01-20

arxiv.org/abs/1001.3698v1

Phys. Rev. Lett. 104, 126403 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.104.126403

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.

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