Second-order time correlations within a polariton Bose-Einstein condensate in a CdTe microcavity

Second-order time correlations within a polariton Bose-Einstein condensate in a CdTe microcavity

Second-order time correlations of polaritons have been measured across the condensation threshold in a CdTe microcavity. The onset of Bose-Einstein condensation is marked by the disappearance of photon bunching, demonstrating the transition from a thermal-like state to a coherent state. Coherence is...

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Bibliographic Details
Published in:Physical review letters Vol. 100; no. 6; p. 067402
Main Authors: Kasprzak, J, Richard, M, Baas, A, Deveaud, B, André, R, Poizat, J-Ph, Dang, Le Si
Format: Journal Article
Language:English
Published: United States American Physical Society 15-02-2008
Subjects:
ANNIHILATION OPERATORS
BOSE-EINSTEIN CONDENSATION
CADMIUM TELLURIDES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Condensed Matter
CORRELATIONS
EIGENSTATES
EXCITONS
Other
PHOTONS
Physics
POLARONS
SCATTERING
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Summary:Second-order time correlations of polaritons have been measured across the condensation threshold in a CdTe microcavity. The onset of Bose-Einstein condensation is marked by the disappearance of photon bunching, demonstrating the transition from a thermal-like state to a coherent state. Coherence is, however, degraded with increasing polariton density, most probably as a result of self-interaction within the condensate and scatterings with noncondensed excitons and polaritons. Such behavior clearly differentiates polariton Bose condensation from photon lasing.
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ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.100.067402