Tight-binding model for exciton-polariton condensates in external potentials

被引：14

作者：

Stepnicki, Piotr ^{[1
]}

Matuszewski, Michal ^{[1
]}

机构：

[1] Inst Fizyki PAN, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW A | 2013年 / 88卷 / 03期

关键词：

BOSE-EINSTEIN CONDENSATION; DISCRETE SOLITONS; DYNAMICS; ARRAYS; GAS;

D O I：

10.1103/PhysRevA.88.033626

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a mean-field model to describe exciton-polariton condensates in deep periodic external potentials. We derive a set of coupled discrete equations for both condensed and uncondensed components, with interaction and tunneling coefficients obtained within the tight-binding approximation. We use the model to explain the intriguing phenomenon of increasing density modulation in a one-dimensional valley with disorder, reported by F. Manni et al. [Phys. Rev. Lett. 106, 176401 ( 2011)].

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页数：7

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