Dynamical tunneling with ultracold atoms in magnetic microtraps

Lenz, Martin, Wüster, Sebastian, Vale, Christopher J., Heckenberg, Norman R., Rubinsztein-Dunlop, Halina, Holmes, C. A., Milburn, G. J. and Davis, Matthew J. (2013) Dynamical tunneling with ultracold atoms in magnetic microtraps. Physical Review A: Atomic, Molecular and Optical Physics, 88 1: 013635.1-013635.13. doi:10.1103/PhysRevA.88.013635

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Author Lenz, Martin
Wüster, Sebastian
Vale, Christopher J.
Heckenberg, Norman R.
Rubinsztein-Dunlop, Halina
Holmes, C. A.
Milburn, G. J.
Davis, Matthew J.
Title Dynamical tunneling with ultracold atoms in magnetic microtraps
Journal name Physical Review A: Atomic, Molecular and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
Publication date 2013-07
Sub-type Article (original research)
DOI 10.1103/PhysRevA.88.013635
Open Access Status File (Publisher version)
Volume 88
Issue 1
Start page 013635.1
End page 013635.13
Total pages 13
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Formatted abstract
The study of dynamical tunneling in a periodically driven anharmonic potential probes the quantum-classical transition via the experimental control of the effective Planck's constant for the system. In this paper we consider the prospects for observing dynamical tunneling with ultracold atoms in magnetic microtraps on atom chips. We outline the driven anharmonic potentials that are possible using standard magnetic traps and find the Floquet spectrum for one of these as a function of the potential strength, modulation, and effective Planck's constant. We develop an integrable approximation to the nonintegrable Hamiltonian and find that it can explain the behavior of the tunneling rate as a function of the effective Planck's constant in the regular region of parameter space. In the chaotic region we compare our results with the predictions of models that describe chaos-assisted tunneling. Finally, we examine the practicality of performing these experiments in the laboratory with Bose-Einstein condensates.
Keyword Bose-Einstein condensate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 3 times in Scopus Article | Citations
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