Atomic Quantum Simulation of Dynamical Gauge Fields Coupled to Fermionic Matter: From String Breaking to Evolution after a Quench

D. Banerjee, M. Dalmonte, M. Müller, E. Rico, P. Stebler, U.-J. Wiese, and P. Zoller
Phys. Rev. Lett. 109, 175302 – Published 23 October 2012
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Abstract

Using a Fermi-Bose mixture of ultracold atoms in an optical lattice, we construct a quantum simulator for a U(1) gauge theory coupled to fermionic matter. The construction is based on quantum links which realize continuous gauge symmetry with discrete quantum variables. At low energies, quantum link models with staggered fermions emerge from a Hubbard-type model which can be quantum simulated. This allows us to investigate string breaking as well as the real-time evolution after a quench in gauge theories, which are inaccessible to classical simulation methods.

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  • Received 29 May 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.175302

© 2012 American Physical Society

Authors & Affiliations

D. Banerjee1, M. Dalmonte2,3, M. Müller4, E. Rico2,3, P. Stebler1, U.-J. Wiese1, and P. Zoller2,3,5

  • 1Albert Einstein Center, Institute for Theoretical Physics, Bern University, CH-3012, Bern, Switzerland
  • 2Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria
  • 3Institute for Theoretical Physics, Innsbruck University, A-6020 Innsbruck, Austria
  • 4Departamento de Fisica Teorica I, Universidad Complutense, 28040 Madrid, Spain
  • 5Joint Quantum Institute: National Institute of Standards and Technology, and University of Maryland, College Park, Maryland 20742, USA

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Issue

Vol. 109, Iss. 17 — 26 October 2012

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