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Title: Excitations in a Nonequilibrium Bose-Einstein Condensate of Exciton Polaritons

Abstract

We develop a mean-field theory of the dynamics of a nonequilibrium Bose-Einstein condensate of exciton polaritons in a semiconductor microcavity. The spectrum of elementary excitations around the stationary state is analytically studied by means of a generalized Gross-Pitaevskii equation. A diffusive behavior of the Goldstone mode is found in the spatially homogeneous case and new features are predicted for the Josephson effect in a two-well geometry.

Authors:
 [1];  [2]
  1. TFVS, Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen (Belgium)
  2. BEC-CNR-INFM and Dipartimento di Fisica, Universita di Trento, I-38050 Povo (Italy)
Publication Date:
OSTI Identifier:
21024222
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 99; Journal Issue: 14; Other Information: DOI: 10.1103/PhysRevLett.99.140402; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOSE-EINSTEIN CONDENSATION; EQUATIONS; EXCITATION; EXCITONS; GEOMETRY; JOSEPHSON EFFECT; MEAN-FIELD THEORY; POLARONS; SEMICONDUCTOR MATERIALS; SPECTRA

Citation Formats

Wouters, Michiel, and Carusotto, Iacopo. Excitations in a Nonequilibrium Bose-Einstein Condensate of Exciton Polaritons. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.99.140402.
Wouters, Michiel, & Carusotto, Iacopo. Excitations in a Nonequilibrium Bose-Einstein Condensate of Exciton Polaritons. United States. doi:10.1103/PHYSREVLETT.99.140402.
Wouters, Michiel, and Carusotto, Iacopo. Fri . "Excitations in a Nonequilibrium Bose-Einstein Condensate of Exciton Polaritons". United States. doi:10.1103/PHYSREVLETT.99.140402.
@article{osti_21024222,
title = {Excitations in a Nonequilibrium Bose-Einstein Condensate of Exciton Polaritons},
author = {Wouters, Michiel and Carusotto, Iacopo},
abstractNote = {We develop a mean-field theory of the dynamics of a nonequilibrium Bose-Einstein condensate of exciton polaritons in a semiconductor microcavity. The spectrum of elementary excitations around the stationary state is analytically studied by means of a generalized Gross-Pitaevskii equation. A diffusive behavior of the Goldstone mode is found in the spatially homogeneous case and new features are predicted for the Josephson effect in a two-well geometry.},
doi = {10.1103/PHYSREVLETT.99.140402},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 14,
volume = 99,
place = {United States},
year = {2007},
month = {10}
}