Dissipation induced coherence of a two-mode Bose-Einstein condensate
Other Condensed Matter
2008-12-04 v1 Quantum Physics
Abstract
We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly-interacting condensate as well as the response to an external driving show a pronounced stochastic resonance effect: Both quantities become maximal for a finite value of the dissipation rate matching the intrinsic time scales of the system. Even stronger effects are observed when dissipation acts in concurrence with strong inter-particle interactions, restoring the purity of the condensate almost completely and increasing the phase coherence significantly.
Cite
@article{arxiv.0809.1776,
title = {Dissipation induced coherence of a two-mode Bose-Einstein condensate},
author = {D. Witthaut and F. Trimborn and S. Wimberger},
journal= {arXiv preprint arXiv:0809.1776},
year = {2008}
}
Comments
10 pages, 5 figures