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Title: Arrays of individually controlled ions suitable for two-dimensional quantum simulations

A precisely controlled quantum system may reveal a fundamental understanding of another, less accessible system of interest. A universal quantum computer is currently out of reach, but an analogue quantum simulator that makes relevant observables, interactions and states of a quantum model accessible could permit insight into complex dynamics. Several platforms have been suggested and proof-of-principle experiments have been conducted. Here, we operate two-dimensional arrays of three trapped ions in individually controlled harmonic wells forming equilateral triangles with side lengths 40 and 80 μm. In our approach, which is scalable to arbitrary two-dimensional lattices, we demonstrate individual control of the electronic and motional degrees of freedom, preparation of a fiducial initial state with ion motion close to the ground state, as well as a tuning of couplings between ions within experimental sequences. Lastly, our work paves the way towards a quantum simulator of two-dimensional systems designed at will.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2] ;  [3] ;  [3] ;  [3] ;  [4] ;  [5]
  1. Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany). Physikalisches Inst.
  2. Univ. of Basel (Switzerland). Dept. of Physics
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. National Inst. of Standards and Technology (NIST), Boulder, CO (United States). Time and Frequency Division
  5. Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany). Physikalisches Inst.; Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany). Freiburg Inst. for Advanced Studies
Publication Date:
Report Number(s):
SAND-2017-8625J
Journal ID: ISSN 2041-1723; 656199
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); German Research Foundation (DFG)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICS AND COMPUTING
OSTI Identifier:
1429826