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arXiv 1105.3306cond-mat.quant-gas
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极化子凝聚体中自发斑图形成

Spontaneous Pattern Formation in a Polariton Condensate

F. Manni, K. G. Lagoudakis, T. C. H. Liew, R. André, B. Deveaud-Plédran

摘要:

极化子凝聚可以看作是一种自组织现象,在系统中的粒子之间建立相序。在这样的凝聚系统中,在特定的实验条件下,粒子密度分布可能会进一步有序化。在这项工作中,我们报告的自发斑图形成的极化凝聚下的非共振光泵。我们采用的略椭圆形的环形激发激光器是这样的,以迫使凝聚发生在一个单能状态与周期性的边界条件,从而产生多瓣驻波图案的状态。

英文摘要:

Polariton condensation can be regarded as a self-organization phenomenon, where phase ordering is established among particles in the system. In such condensed systems, further ordering can possibly occur in the particle density distribution, under particular experimental conditions. In this work we report on spontaneous pattern formation in a polariton condensate under non-resonant optical pumping. The slightly elliptical ring-shaped excitation laser we employ is such to force condensation to occur in a single-energy state with periodic boundary conditions, giving rise to a multi-lobe standing wave patterned state.

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