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Tuning the Mott transition in a Bose-Einstein condensate by multiple photon absorption

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Creffield, Charles E. and Monteiro, T. S. (2006) Tuning the Mott transition in a Bose-Einstein condensate by multiple photon absorption. Physical review letters, 96 (21). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.96.210403


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Abstract

We study the time-dependent dynamics of a Bose-Einstein condensate trapped in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how applying a periodic driving field can induce coherent destruction of tunneling. In the low-frequency regime, we obtain the novel result that the destruction of tunneling displays extremely sharp peaks when the driving frequency is resonant with the depth of the trapping potential (‘‘multi-photon resonances’’), which allows the quantum phase transition between the Mott insulator and the superfluid state to be controlled with high precision. We further show how the waveform of the field can be chosen to maximize this effect.


Item Type:Article
Additional Information:

©2006 The American Physical Society.

Uncontrolled Keywords:Optical lattices; Atoms
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:33556
Deposited On:14 Oct 2015 16:11
Last Modified:14 Oct 2015 16:11

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