Dynamics of Long-Range Ordering in an Exciton-Polariton Condensate

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. ©2009 The American Physical Society


Published in:
Physical Review Letters, 103, 25, 256402
Year:
2009
Publisher:
American Physical Society
ISSN:
0031-9007
Keywords:
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 Record created 2009-12-16, last modified 2018-03-17

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