Dynamics of long-range ordering in an exciton-polariton condensate

G. Nardin, K. G. Lagoudakis, M. Wouters, M. Richard, A. Baas, R. André, Le Si Dang, B. Pietka, B. Deveaud-Plédran

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Abstract

We report on time-resolved measurements of the first order spatial coherence in an exciton-polariton Bose-Einstein condensate. Long-range spatial coherence is found to set in right at the onset of stimulated scattering, on a picosecond time scale. The coherence reaches its maximum value after the population and decays slowly, staying up to a few hundred picoseconds. This behavior can be qualitatively reproduced, using a stochastic classical field model describing interaction between the polariton condensate and the exciton reservoir within a disordered potential.
Original languageEnglish
Article number256402
Number of pages4
JournalPhys. Rev. Lett.
Volume103
Issue number25
DOIs
Publication statusPublished - 15 Dec 2009

Keywords

  • spatial coherence
  • long-range ordering
  • exciton polariton condensates

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