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Floquet Engineering of Correlated Tunneling in the Bose-Hubbard Model with Ultracold Atoms

F. Meinert, M. J. Mark, K. Lauber, A. J. Daley, and H.-C. Nägerl
Phys. Rev. Lett. 116, 205301 – Published 17 May 2016
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Abstract

We report on the experimental implementation of tunable occupation-dependent tunneling in a Bose-Hubbard system of ultracold atoms via time-periodic modulation of the on-site interaction energy. The tunneling rate is inferred from a time-resolved measurement of the lattice site occupation after a quantum quench. We demonstrate coherent control of the tunneling dynamics in the correlated many-body system, including full suppression of tunneling as predicted within the framework of Floquet theory. We find that the tunneling rate explicitly depends on the atom number difference in neighboring lattice sites. Our results may open up ways to realize artificial gauge fields that feature density dependence with ultracold atoms.

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  • Received 7 February 2016

DOI:https://doi.org/10.1103/PhysRevLett.116.205301

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Synopsis

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No Vacancy for Tunneling

Published 17 May 2016

The tunneling rate for cold atoms in an optical lattice can be made to depend on whether a neighboring site is occupied—a behavior that may reflect the tunneling in complex materials.

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Authors & Affiliations

F. Meinert1, M. J. Mark1,2, K. Lauber1, A. J. Daley3, and H.-C. Nägerl1

  • 1Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria
  • 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria
  • 3Department of Physics and SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom

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Issue

Vol. 116, Iss. 20 — 20 May 2016

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