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Quantum Quench in an Atomic One-Dimensional Ising Chain

F. Meinert, M. J. Mark, E. Kirilov, K. Lauber, P. Weinmann, A. J. Daley, and H.-C. Nägerl
Phys. Rev. Lett. 111, 053003 – Published 31 July 2013
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Abstract

We study nonequilibrium dynamics for an ensemble of tilted one-dimensional atomic Bose-Hubbard chains after a sudden quench to the vicinity of the transition point of the Ising paramagnetic to antiferromagnetic quantum phase transition. The quench results in coherent oscillations for the orientation of effective Ising spins, detected via oscillations in the number of doubly occupied lattice sites. We characterize the quench by varying the system parameters. We report significant modification of the tunneling rate induced by interactions and show clear evidence for collective effects in the oscillatory response.

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  • Received 9 April 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.053003

© 2013 American Physical Society

Authors & Affiliations

F. Meinert1, M. J. Mark1, E. Kirilov1, K. Lauber1, P. Weinmann1, A. J. Daley2, and H.-C. Nägerl1

  • 1Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria
  • 2Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA

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Issue

Vol. 111, Iss. 5 — 2 August 2013

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