Mode locking and mode competition in a nonequilibrium solid-state condensate

被引：46

作者：

Eastham, P. R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.78.035319

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A trapped polariton condensate with continuous pumping and decay is analyzed using a generalized Gross-Pitaevskii model. Whereas an equilibrium condensate is characterized by a macroscopic occupation of a ground state, here the steady states take more general forms. Some are characterized by a large population in an excited state; others by large populations in several states, which may overlap spatially. In the latter case, the highly populated states synchronize to a common frequency above a critical density. At intermediate densities, they can drive condensation in other trap modes by parametric scattering. Estimates for the critical density of the synchronization transition are consistent with experiments.

引用

页数：5

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