Frictionless flow in a binary polariton superfluid
Mesoscale and Nanoscale Physics
2012-02-16 v2 Quantum Gases
Abstract
We study the properties of a binary microcavity polariton superfluid coherently injected by two lasers. The crossover from the supersonic to subsonic regime, where motion is frictionless, is described by evaluating the Bogoliubov spectra. We show that according to the Landau criteria, the coupling between the two components precludes the existence of superfluidity just for one component but not for the other. By analysing the drag force exerted on a defect, we give a recipe to experimentally address the crossover from the supersonic to the subsonic regime.
Cite
@article{arxiv.1107.4522,
title = {Frictionless flow in a binary polariton superfluid},
author = {E. Cancellieri and F. M. Marchetti and M. H. Szymanska and D. Sanvitto and C. Tejedor},
journal= {arXiv preprint arXiv:1107.4522},
year = {2012}
}
Comments
4+ pages, 4 figures, 4 pages of supplementary material