Tunneling Control and Localization for Bose-Einstein Condensates in a Frequency Modulated Optical Lattice
Authors: Zenesini A., Lignier H., Sias C., Morsch O., Ciampini D., Arimondo E.
Autors Affiliation: CNISM Dipartimento di Fisica E.Fermi, Universita di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy; CNR-INFM, Dipartimento di Fisica E.Fermi, Università di Pisa, Lgo Pontecorvo 3, I-56127 Pisa, Italy
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.
Journal/Review: LASER PHYSICS
Volume: 20 (5) Pages from: 1182 to: 1189
More Information: Financial support by the EU-STREP NAMEQUAM and by a CNISM Progetto Innesco 2007 is gratefully acknowledged. We thank J. Radogostowicz and Y. Singh for assistance and A. Eckardt and M. Holthaus for the helpful suggestions. On of the authors (EA) thanks V.V. Konotop and M. Salerno for discussions.KeyWords: Bose-Einstein condensation; optical lattices; quantum tunneling; dynamic localization; electric-fieldDOI: 10.1134/S1054660X10090410Citations: 21data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-01-29References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here