Energy relaxation in one-dimensional polariton condensates

被引：86

作者：

Wouters, M. ^{[1
]}

Liew, T. C. H. ^{[1
]}

Savona, V. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 24期

关键词：

BOSE-EINSTEIN CONDENSATION; QUANTUM KINETIC-THEORY; LASERS;

D O I：

10.1103/PhysRevB.82.245315

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the kinetics of polariton condensation accounting for the condensation process as well as the energy relaxation of condensed polaritons due to their scattering with phonons and excitons. By assuming a Boltzmann kinetic description of the scattering process, we show that intracondensate relaxation can be accounted for by an additional time-dependent term in the Gross-Pitaevskii equation. As an example, we apply the formalism to the experimental results recently obtained in polariton microwires [E. Wertz, L. Ferrier, D. Solnyshkov, R. Johne, D. Sanvitto, A. Lemaitre, I. Sagnes, R. Grousson, A. V. Kavokin, P. Senellart, G. Malpuech, and J. Bloch, Nat. Phys. 6, 860 (2010)]. In the presence of a local nonresonant optical pump, a dynamic balance between spatially dependent relaxation and particle loss develops and excites a series of modes, roughly equally spaced in energy. Upon comparison, excellent agreement is found with the experimental data.

引用

页数：6

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