Parametric Driving of Dark Solitons in Atomic Bose-Einstein Condensates
Other Condensed Matter
2009-11-10 v2
Abstract
A dark soliton oscillating in an elongated harmonically-confined atomic Bose-Einstein condensate continuously exchanges energy with the sound field. Periodic optical `paddles' are employed to controllably enhance the sound density and transfer energy to the soliton, analogous to parametric driving. In the absence of damping, the amplitude of the soliton oscillations can be dramatically reduced, whereas with damping, a driven soliton equilibrates as a stable dark soliton with lower energy, thereby extending the soliton lifetime up to the lifetime of the condensate.
Cite
@article{arxiv.cond-mat/0403566,
title = {Parametric Driving of Dark Solitons in Atomic Bose-Einstein Condensates},
author = {N. P. Proukakis and N. G. Parker and C. F. Barenghi and C. S. Adams},
journal= {arXiv preprint arXiv:cond-mat/0403566},
year = {2009}
}
Comments
PRL Accepted. Changes: Clarified distinction between 2 regimes of long-term soliton stabilization: (a) against decay, (b) at fixed soliton energy. Fig. 4 modified accordingly