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1. Build up of off-diagonal long-range order in microcavity exciton-polaritons across the parametric threshold

Author

Spano, R., Cuadra, J., Lingg, C., Sanvitto, D., Martin, M. D., Eastham, P. R., van der Poel, M., Hvam, J. M., and Vina, L.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We report an experimental study of the spontaneous spatial and temporal coherence of polariton condensates generated in the optical parametric oscillator configuration, below and at the parametric threshold, and as a function of condensate area. Above the threshold we obtain very long coherence times (up to 3 ns) and a spatial coherence extending over the entire condensate (40 \mu m). The very long coherence time and its dependence on condensate area and pump power reflect the suppression of polariton-polariton interactions by an effect equivalent to motional narrowing., Comment: 5 pages, 3 figures

Published
2011

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