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Observation of Hopping and Blockade of Bosons in a Trapped Ion Spin Chain

S. Debnath, N. M. Linke, S.-T. Wang, C. Figgatt, K. A. Landsman, L.-M. Duan, and C. Monroe
Phys. Rev. Lett. 120, 073001 – Published 12 February 2018
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Abstract

The local phonon modes in a Coulomb crystal of trapped ions can represent a Hubbard system of coupled bosons. We selectively prepare single excitations at each site and observe free hopping of a boson between sites, mediated by the long-range Coulomb interaction between ions. We then implement phonon blockades on targeted sites by driving a Jaynes-Cummings interaction on individually addressed ions to couple their internal spin to the local phonon mode. The resulting dressed states have energy splittings that can be tuned to suppress phonon hopping into the site. This new experimental approach opens up the possibility of realizing large-scale Hubbard systems from the bottom up with tunable interactions at the single-site level.

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  • Received 8 November 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.073001

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

S. Debnath1,*, N. M. Linke1, S.-T. Wang2, C. Figgatt1, K. A. Landsman1, L.-M. Duan2, and C. Monroe1

  • 1Joint Quantum Institute, Department of Physics, and Joint Center for Quantum Information and Computer Science, University of Maryland, College Park, Maryland 20742, USA
  • 2Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

  • *sdebnath@terpmail.umd.edu

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Issue

Vol. 120, Iss. 7 — 16 February 2018

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