Engineered two-dimensional Ising interactions in a trapped-ion quantum simulator with hundreds of spins

  title={Engineered two-dimensional Ising interactions in a trapped-ion quantum simulator with hundreds of spins},
  author={Joseph W. Britton and Brian C. Sawyer and Adam C. Keith and C.C.-Joseph Wang and James K. Freericks and Hermann Uys and Michael J. Biercuk and John J. Bollinger},
The presence of long-range quantum spin correlations underlies a variety of physical phenomena in condensed-matter systems, potentially including high-temperature superconductivity. However, many properties of exotic, strongly correlated spin systems, such as spin liquids, have proved difficult to study, in part because calculations involving N-body entanglement become intractable for as few as N ≈ 30 particles. Feynman predicted that a quantum simulator—a special-purpose ‘analogue’ processor… 
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