Scientific Results

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

Year: 2011

Authors: Pigeon S., Carusotto I., Ciuti C.

Autors Affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7 and CNRS, UMR 7162, F-75205 Paris Cedex 13, France; INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, I-38123 Povo, Italy

Abstract: We present a theoretical study of the hydrodynamic properties 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 nonequilibrium nature of the polariton fluid are pointed out. For the present case of a resonant polariton excitation, an effective way to create, trap, and control arrays of vortices is proposed.

Journal/Review: PHYSICAL REVIEW B

Volume: 83 (14)      Pages from: 144513  to: 144513

KeyWords: optical vortices; polaritons; superfluid; microcavities;
DOI: 10.1103/PhysRevB.83.144513

Citations: 61
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English