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arXiv · 0905.2337

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

G. Nardin·K. G. Lagoudakis·M. Wouters·M. Richard·A. Baas·R. Andre·Le Si Dang·B. Pietka·B. Deveaud-Pledran
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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 slower, staying up to a few hundreds of 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.

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G. Nardin, K. G. Lagoudakis, M. Wouters, M. Richard, A. Baas, R. Andre, Le Si Dang, B. Pietka, B. Deveaud-Pledran. 2009-11-09. Dynamics of long-range order in an exciton-polariton condensate. https://doi.org/10.1103/physrevlett.103.256402

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