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

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

2009-05-14

arxiv.org/abs/0905.2337v2

Phys. Rev. Lett. 103, 256402 (2009)

Physics

Condensed Matter

Quantum Gases

7 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.103.256402

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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