Abstract
We examine spatial localization and dynamical stability of Bose-Einstein condensates of exciton polaritons in microcavities under the condition of off-resonant spatially inhomogeneous optical pumping both with and without a harmonic trapping potential. We employ the open-dissipative Gross-Pitaevskii model for describing an incoherently pumped polariton condensate coupled to an exciton reservoir, and reveal that spatial localization of the steady-state condensate occurs due to the effective self-trapping created by the polariton flows supported by the spatially inhomogeneous pump, regardless of the presence of the external potential. A ground state of the polariton condensate with repulsive interactions between the quasiparticles represents a dynamically stable bright dissipative soliton. We also investigate the conditions for sustaining spatially localized structures with nonzero angular momentum in the form of single-charge vortices.
Original language | English |
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Article number | 013636 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 86 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jul 23 2012 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics