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

TitleObservation of Hopping and Blockade of Bosons in a Trapped Ion Spin Chain
Publication TypeJournal Article
Year of Publication2018
AuthorsS.. Debnath, N.. M. Linke, S.. - T. Wang, C.. Figgatt, K.. A. Landsman, L.. - M. Duan, and C.. Monroe
Date PublishedFEB 12
Type of ArticleArticle

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.}, %%Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA