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arXiv · 1404.1742

Dynamics and stability of dark solitons in exciton-polariton condensates

Lev A. Smirnov·Daria A. Smirnova·Elena A. Ostrovskaya·Yuri S. Kivshar
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Abstract

We present a comprehensive analytical theory of localized nonlinear excitations - dark solitons, supported by an incoherently pumped, spatially homogeneous exciton-polariton condensate. We show that, in contrast to dark solitons in conservative systems, these nonlinear excitations "relax" by blending with the background at a finite time, which critically depends on the parameters of the condensate. Our analytical results for trajectory and lifetime are in excellent agreement with direct numerical simulations of the open-dissipative mean-field model. In addition, we show that transverse instability of quasi-one-dimensional dark stripes in a two-dimensional open-dissipative condensate demonstrates features that are entirely absent in conservative systems, as creation of vortex-antivortex pairs competes with the soliton relaxation process.

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Lev A. Smirnov, Daria A. Smirnova, Elena A. Ostrovskaya, Yuri S. Kivshar. 2014-04-07. Dynamics and stability of dark solitons in exciton-polariton condensates. https://doi.org/10.1103/physrevb.89.235310

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