2010/06/24 by Simon Pigeon, Iacopo Carusotto, Cristiano Ciuti · 1 citation
Physics and Astronomy · #cond-mat.other #physics.optics
paper · pdf · doi:10.1103/physrevb.83.144513
published as Physical Review B 83 (2011) 144513
arxiv created 2010/06/24 · arxiv updated 2011/04/22
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.