Electric generation of vortices in an exciton-polariton superfluid

Details Electric generation of vortices in an exciton-polariton superfluid Electric generation of vortices in an exciton-polariton superfluid

2011-08-30

arxiv.org/abs/1108.5901v2

H. Flayac, G. Pavlovic, M. A. Kaliteevski, and I. A. Shelykh, Phys. Rev. B 85, 075312 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages and 7 figures

Scientific paper

10.1103/PhysRevB.85.075312

We have theoretically demonstrated the on demand electric generation of vortices in an exciton-polariton superfluid. Electric pulses applied to a horseshoe-shaped metallic mesa, deposited on top of the microcavity, generate a non-cylindrically symmetric solitonic wave in the system. Breakdown of its wavefront at focal points leads to the formation of vortex-antivortex pairs which subsequently propagate in the superfluid. The trajectory of these vortex dipoles can be controlled by applying a voltage to additional electrodes. They can be confined within channels formed by metallic stripes and unbound by a wedged mesa giving birth to grey solitons. Finally single static vortices can be generated using a single metallic plate configuration.

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