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Tunneling control and localization for Bose-Einstein condensates in a frequency modulated optical lattice

Zenesini, A. and Lignier, H. and Sias, C. and Morsch, O. and Ciampini, D. and Arimondo, E. (2009) Tunneling control and localization for Bose-Einstein condensates in a frequency modulated optical lattice. Laser Physics . ISSN 1555-6611

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Abstract

The similarity between matter waves in periodic potential and solid-state physics processes has triggered the interest in quantum simulation using Bose-Fermi ultracold gases in optical lattices. The present work evidences the similarity between electrons moving under the application of oscillating electromagnetic fields and matter waves experiencing an optical lattice modulated by a frequency difference, equivalent to a spatially shaken periodic potential. We demonstrate that the tunneling properties of a Bose-Einstein condensate in shaken periodic potentials can be precisely controlled. We take additional crucial steps towards future applications of this method by proving that the strong shaking of the optical lattice preserves the coherence of the matter wavefunction and that the shaking parameters can be changed adiabatically, even in the presence of interactions. We induce reversibly the quantum phase transition to the Mott insulator in a driven periodic potential.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/03 - Fisica della materia
Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI"
Depositing User: dott.ssa Sandra Faita
Date Deposited: 08 Apr 2015 10:28
Last Modified: 08 Apr 2015 10:28
URI: http://eprints.adm.unipi.it/id/eprint/1381

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