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arXiv · 1205.1570

Dissipative solitons and vortices in polariton superfluids

Elena A. Ostrovskaya·Jasur Abdullaev·Anton S. Desyatnikov·Michael D. Fraser·Yuri S. Kivshar
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Abstract

We examine spatial localisation 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 localisation 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 localised structures with non-zero angular momentum in the form of single-charge vortices.

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Elena A. Ostrovskaya, Jasur Abdullaev, Anton S. Desyatnikov, Michael D. Fraser, Yuri S. Kivshar. 2012-05-08. Dissipative solitons and vortices in polariton superfluids. https://doi.org/10.1103/physreva.86.013636

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