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APS » Journals » Phys. Rev. Lett. » Volume 101 » Issue 17
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Phys. Rev. Lett. 101, 170504 (2008) [4 pages]

Quantum Computing with Alkaline-Earth-Metal Atoms

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Andrew J. Daley1,2, Martin M. Boyd3, Jun Ye1,3, and Peter Zoller1,2
1California Institute of Technology, Pasadena, California 91125, USA
2Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria and Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria
3JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA

Received 14 August 2008; published 23 October 2008

We present a complete scheme for quantum information processing using the unique features of alkaline-earth-metal atoms. We show how two completely independent lattices can be formed for the 1S0 and 3P0 states, with one used as a storage lattice for qubits encoded on the nuclear spin, and the other as a transport lattice to move qubits and perform gate operations. We discuss how the 3P2 level can be used for addressing of individual qubits, and how collisional losses from metastable states can be used to perform gates via a lossy blockade mechanism.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.170504
DOI:
10.1103/PhysRevLett.101.170504
PACS:
03.67.Lx, 42.50.−p
 
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