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Dissipative solitons and vortices in polariton superfluids | | Elena A. Ostrovskaya
; Jasur Abdullaev
; Anton S. Desyatnikov
; Michael D. Fraser
; Yuri S. Kivshar
; | | Date: |
8 May 2012 | | 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. | | Source: | arXiv, 1205.1570 | | Services: | Forum | Review | PDF | Favorites | |
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