Dynamics and stability of dark solitons in exciton-polariton condensates
arXiv:1404.1742 · doi:10.1103/PhysRevB.89.235310
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.
12 pages, 8 figures
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- Emulation of lossless exciton-polariton condensates by dual-core optical waveguides: Stability, collective modes, and dark solitons
- Magnetic polarons in a nonequilibrium polariton condensate
- Critical dynamics and tree-like spatiotemporal patterns in exciton-polaritoncondensates
- A Korteweg-de Vries description of dark solitons in polariton superfluids
- Finite-temperature Hatree-Fock-Bogoliubov theory for exciton-polaritons
- Self-rotation and synchronization in exciton-polariton condensates
- Interaction between an impurity and nonlinear excitations in a polariton condensate
- Contour dynamics of two-dimensional dark solitons