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Polariton condensation in dynamic acoustic lattices

We demonstrate that the tunable potential introduced by a surface acoustic wave on a homogeneous polariton condensate leads to fragmentation of the condensate into an array of wires which move with the acoustic velocity. Reduction of the spatial coherence of the condensate emission along the surface...

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Bibliographic Details
Published in:Physical review letters 2010-09, Vol.105 (11), p.116402-116402, Article 116402
Main Authors: Cerda-Méndez, E A, Krizhanovskii, D N, Wouters, M, Bradley, R, Biermann, K, Guda, K, Hey, R, Santos, P V, Sarkar, D, Skolnick, M S
Format: Article
Language:English
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Summary:We demonstrate that the tunable potential introduced by a surface acoustic wave on a homogeneous polariton condensate leads to fragmentation of the condensate into an array of wires which move with the acoustic velocity. Reduction of the spatial coherence of the condensate emission along the surface acoustic wave direction is attributed to the suppression of coupling between the spatially modulated condensates. Interparticle interactions observed at high polariton densities screen the acoustic potential, partially reversing its effect on spatial coherence.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.105.116402