Physics – Quantum Physics
Scientific paper
2009-02-03
Phys. Rev. A 79, 033621 (2009)
Physics
Quantum Physics
12 pages, 12 figures
Scientific paper
10.1103/PhysRevA.79.033621
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, experimentally measured via the contrast in an interference experiment, as well as the response to an external driving become maximal for a finite value of the dissipation rate matching the intrinsic time scales of the system. This can be understood as a stochastic resonance of the many-particle 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. Our theoretical results are backed by Monte Carlo simulations, which show a good qualitative agreement and provide a microscopic explanation for the observed stochastic resonance effect.
Trimborn F.
Wimberger Sandro
Witthaut Dirk
No associations
LandOfFree
Dissipation induced coherence and stochastic resonance of an open two-mode Bose-Einstein condensate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dissipation induced coherence and stochastic resonance of an open two-mode Bose-Einstein condensate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dissipation induced coherence and stochastic resonance of an open two-mode Bose-Einstein condensate will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-552943