Observation of a Dynamical Phase Transition in a Quantum Simulator of Lipkin-Meshkov-Glick Model using Bosonic Gases
ORAL
Abstract
We theoretically propose and experimentally demonstrate the use of motional sidebands in a trapped thermal ensemble of 87Rb atoms to engineer tunable long-range XXZ spin models. We benchmark our simulator by probing a ferromagnetic to paramagnetic dynamical phase transition in the Lipkin-Meshkov-Glick (LMG) model, a collective XXZ model plus additional transverse and longitudinal fields, via Rabi spectroscopy. We experimentally reconstruct the boundary between the dynamical phases, which is in good agreement with mean-field theoretical predictions. Our work introduces new possibilities in quantum simulation of anisotropic spin-spin interactions and quantum metrology enhanced by many-body entanglement.
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Presenters
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Anjun Chu
JILA, NIST and Dept. of Physics, University of Colorado Boulder
Authors
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Anjun Chu
JILA, NIST and Dept. of Physics, University of Colorado Boulder
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Johannes Will
Institut für Quantenoptik, Leibniz Universität Hannover
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Jan Arlt
Institut for Fysik og Astronomi, Aarhus Universitet
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Carsten Klempt
Institut für Quantenoptik, Leibniz Universität Hannover
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Ana Maria Rey
JILA, NIST and Dept. of Physics, University of Colorado Boulder, University of Colorado, Boulder, JILA, NIST, Department of Physics, University of Colorado, Boulder, CO, JILA, NIST, Department of Physics, University of Colorado, Boulder, JILA, NIST, Univ. of Colorado Boulder