Alkaline-earth atoms as few-qubit quantum registers

POSTER

Abstract

We propose and analyze a novel approach to quantum information processing, in which multiple qubits can be encoded and manipulated using electronic and nuclear degrees of freedom associated with individual alkaline-earth atoms trapped in an optical lattice. Specifically, we describe how the qubits within each register can be individually manipulated and measured with sub-wavelength optical resolution. We also show how such few-qubit registers can be coupled to each other in optical superlattices via conditional tunneling to form a scalable quantum network. Finally, potential applications to quantum computation and precision measurements are discussed.

Authors

  • Alexey Gorshkov

    Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA, Physics Department, Harvard University, Physics Department, Harvard University, Cambridge, MA 02138, USA, Harvard University, Harvard University, Cambridge, MA 02138, USA

  • Ana Maria Rey

    JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309-0440, USA, Department of Physics, University of Colorado (JILA), JILA and Department of Physics, University of Colorado, Boulder, CO 80309, USA, JILA \& Department of Physics, University of Colorado at Boulder, JILA and Department of Physics, University of Colorado, Boulder, Colorado, JILA and University of Colorado, Boulder, CO 80309, USA

  • Andrew Daley

    Institute for Theoretical Physics, University of Innsbruck, and Institute for Quantum Optics and Quantum Information, A-6020 Innsbruck, Austria, University of Innsbruck and IQOQI, A-6020 Innsbruck, Austria

  • Martin Boyd

    JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309-0440, USA, JILA, NIST and University of Colorado, JILA and University of Colorado, Boulder, CO 80309, USA

  • J. Ye

    JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309-0440, USA, JILA, NIST and University of Colorado, JILA and University of Colorado, Boulder, CO 80309, USA

  • Peter Zoller

    Institute for Theoretical Physics, University of Innsbruck, and Institute for Quantum Optics and Quantum Information, A-6020 Innsbruck, Austria, University of Innsbruck and IQOQI, A-6020 Innsbruck, Austria

  • Mikhail Lukin

    Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA, Physics Department, Harvard University, Cambridge, MA 02138, USA, Harvard University, Department of Physics, Physics Department, Harvard University, Harvard University, Harvard University, Cambridge, MA 02138, USA