Temporally resolved second-order photon correlations of exciton-polariton Bose-Einstein condensate formation

Second-order time correlation measurements with a temporal resolution better than 3 ps were performed on a CdTe microcavity where spontaneous Bose-Einstein condensation is observed. After the laser pulse, the nonresonantly excited thermal polariton population relaxes into a coherent polariton condensate. Photon statistics of the light emitted by the microcavity evidences a clear phase transition from the thermal state to a coherent state, which occurs within 3.2 ps after the onset of stimulated scattering. Following this very fast transition, we show that the emission possesses a very high coherence that persists for more than 100 ps after the build-up of the condensate. (C) 2015 AIP Publishing LLC.


Published in:
Applied Physics Letters, 107, 22, 221107
Year:
2015
Publisher:
Melville, American Institute of Physics
ISSN:
0003-6951
Laboratories:




 Record created 2016-02-16, last modified 2018-09-13

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