Effect of Interactions on Vortices in a Non-equilibrium Polariton Condensate
Optics
2013-09-30 v1
Abstract
We demonstrate the creation of vortices in a macroscopically occupied polariton state formed in a semiconductor microcavity. A weak external laser beam carrying orbital angular momentum (OAM) is used to imprint a vortex on the condensate arising from the polariton optical parametric oscillator (OPO). The vortex core radius is found to decrease with increasing pump power, and is determined by polariton-polariton interactions. As a result of OAM conservation in the parametric scattering process, the excitation consists of a vortex in the signal and a corresponding anti-vortex in the idler of the OPO. The experimental results are in good agreement with a theoretical model of a vortex in the polariton OPO.
Keywords
Cite
@article{arxiv.1309.7171,
title = {Effect of Interactions on Vortices in a Non-equilibrium Polariton Condensate},
author = {D. N. Krizhanovskii and D. M. Whittaker and R. A. Bradley and K. Guda and D. Sarkar and D. Sanvitto and L. Vina and E. Cerda and P. Santos and K. Biermann and R. Hey and M. S. Skolnick},
journal= {arXiv preprint arXiv:1309.7171},
year = {2013}
}
Comments
3 figures