Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid

Details Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid

2010-06-24

arxiv.org/abs/1006.4755v1

Physical Review B 83 (2011) 144513

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.83.144513

We present a theoretical study of the hydrodynamic properties of a quantum gas of exciton-polaritons in a semiconductor microcavity under a resonant laser excitation. The effect of a spatially extended defect on the superfluid flow is investigated as a function of the flow speed. The processes that are responsible for the nucleation of vortices and solitons in the wake of the defect are characterized, as well as the regimes where the superfluid flow remains unperturbed. Specific features due to the non-equilibrium nature of the polariton fluid are put in evidence.

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