2014/08/31 by Nataliya Bobrovska, Elena A. Ostrovskaya, Michal Matuszewski · 1 citation
Physics and Astronomy · #cond-mat.quant-gas #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.90.205304
published as Phys. Rev. B 90, 205304 (2014) · 7 pages, 5 figures
arxiv created 2014/11/01 · arxiv updated 2017/02/27
We investigate the stability and coherence properties of one-dimensional exciton-polariton condensates under nonresonant pumping. We model the condensate dynamics using the open-dissipative Gross-Pitaevskii equation. In the case of spatially homogeneous pumping, we find that the instability of the steady state leads to significant eduction of the coherence length. We consider two effects that can lead to the stabilization of the steady state, i.e. the polariton energy relaxation and the influence of an inhomogeneous pumping profile. We find that, while the former has little effect on the stability, the latter is very effective in stabilizing the condensate which results in a large coherence length.