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Entanglement and Tunable Spin-Spin Couplings between Trapped Ions Using Multiple Transverse Modes

Source: Phys. Rev. Lett. 103, 120502 (2009); doi:10.1103/PhysRevLett.103.120502

Published 16 September 2009

PACS
  • 03.67.Pp
    Quantum error correction and other methods for protection against decoherence
  • 03.67.Ac
    Quantum algorithms, protocols and simulations
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 37.10.Ty
    Ion trapping
  • YEAR: 2009
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PUBLICATION DATA
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K. Kim,1 M.-S. Chang,1 R. Islam,1 S. Korenblit,1 L.-M. Duan,2 and C. Monroe1
1Joint Quantum Institute: Department of Physics, University of Maryland, and National Institute of Standards and Technology, College Park, Maryland 20742, USA
2FOCUS Center and MCTP, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
We demonstrate tunable spin-spin couplings between trapped atomic ions, mediated by laser forces on multiple transverse collective modes of motion. A sigmaxsigmax-type Ising interaction is realized between quantum bits stored in the ground hyperfine clock states of 171Yb+ ions. We demonstrate entangling gates and tailor the spin-spin couplings with two and three trapped ions. The use of closely spaced transverse modes provides a new class of interactions relevant to quantum computing and simulation with large collections of ions in a single crystal. ©2009 The American Physical Society
History: Received 2 May 2009; published 16 September 2009
Permalink: http://link.aps.org/abstract/PRL/v103/e120502

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