Radiative coupling and weak lasing of exciton-polariton condensates

被引：66

作者：

Aleiner, I. L. ^{[1
]}

Altshuler, B. L. ^{[1
]}

Rubo, Y. G. ^{[2
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Univ Nacl Autonoma Mexico, Ctr Invest Energia, Temixco 62580, Morelos, Mexico

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 12期

基金：

美国国家科学基金会;

关键词：

BOSE-EINSTEIN CONDENSATION; VORTICES;

D O I：

10.1103/PhysRevB.85.121301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In spite of having finite lifetimes exciton-polaritons in microcavities are known to condense at strong enough pumping of the reservoir. We present an analytical theory of such Bose condensates on a set of localized one-particle states: condensation centers. To understand the physics of these arrays one has to supplement the Josephson coupling by the radiative coupling caused by the interference of the light emitted by different centers. Combination of these couplings with the one-site interaction between the bosons leads to a rich nonlinear dynamics. In particular, a new regime of radiation appears. We call it weak lasing: The centers have macroscopic occupations and radiate coherently, but the coupling alone is sufficient for stabilization. The system can have several stable states and switch between them. Moreover, the time reversal symmetry in this regime is, as a rule, broken.

引用

页数：5

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