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arXiv · 0907.3424

Spontaneous non-ground state polariton condensation in pillar microcavities

M. Maragkou·A. J. D. Grundy·E. Wertz·A. Lemaitre·I. Sagnes·P. Senellart·J. Bloch·P. G. Lagoudakis
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Abstract

We observe spontaneously driven non-ground state polariton condensation in GaAs pillar microcavities under non-resonant optical excitation. We identify a regime where the interplay of exciton-exciton and pair polariton scattering can lead to mode switching from non-ground state to ground state polariton condensation. A simple kinematic model satisfactorily describes the observed mode switching as each of the above scattering mechanisms becomes prevalent at different carrier densities.

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M. Maragkou, A. J. D. Grundy, E. Wertz, A. Lemaitre, I. Sagnes, P. Senellart, J. Bloch, P. G. Lagoudakis. 2009-07-20. Spontaneous non-ground state polariton condensation in pillar microcavities. https://doi.org/10.1103/physrevb.81.081307

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