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Ultrahigh-fidelity qubits for quantum computing

Source: Phys. Rev. A 80, 030302(R) (2009); doi:10.1103/PhysRevA.80.030302

Published 28 September 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 42.50.Dv
    Quantum state engineering and measurements (quantum optics)
  • 42.50.Ex
    Optical implementations of quantum information processing and transfer
  • YEAR: 2009
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PUBLICATION DATA
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Mark G. Raizen,1,2 Shou-Pu Wan,1,2 Chuanwei Zhang,3 and Qian Niu2
1Center for Nonlinear Dynamics, The University of Texas at Austin, Austin, Texas 78712, USA
2Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA
3Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA
We analyze a system of fermionic 6Li atoms in an optical trap and show that an atom “on demand” can be prepared with ultrahigh fidelity, exceeding 0.999 98. This process can be scaled to many sites in parallel, providing a realistic method to initialize N qubits at ultrahigh fidelity for quantum computing. We also show how efficient quantum gate operation can be implemented in this system and how spatially resolved single-atom detection can be performed. ©2009 The American Physical Society
History: Received 9 June 2009; revised 21 July 2009; published 28 September 2009
Permalink: http://link.aps.org/abstract/PRA/v80/e030302

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