Vortex clusters in a stirred polariton condensate
Mesoscale and Nanoscale Physics
2024-04-12 v1 Quantum Gases
Optics
Abstract
The response of superfluids to the external rotation, evidenced by emergence of quantised vortices, distinguishes them from conventional fluids. In this work, we demonstrate that the number of vortices in a stirred polariton condensate depends on the characteristic size of the employed rotating potential induced by the nonresonant laser excitation. For smaller sizes, a single vortex with a topological charge of +-1 corresponding to the stirring direction is formed. However, for larger optical traps, clusters of two or three co-rotating vortices appear in the narrow range of GHz stirring speed.
Cite
@article{arxiv.2308.09373,
title = {Vortex clusters in a stirred polariton condensate},
author = {Ivan Gnusov and Stella Harrison and Sergey Alyatkin and Kirill Sitnik and Helgi Sigurdsson and Pavlos G. Lagoudakis},
journal= {arXiv preprint arXiv:2308.09373},
year = {2024}
}