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Solid-state quantum memory using the 31P nuclear spin

Author

Listed:
  • John J. L. Morton

    (Oxford University
    CAESR, Clarendon Laboratory, Oxford University)

  • Alexei M. Tyryshkin

    (Princeton University, Princeton, New Jersey 08544, USA)

  • Richard M. Brown

    (Oxford University)

  • Shyam Shankar

    (Princeton University, Princeton, New Jersey 08544, USA)

  • Brendon W. Lovett

    (Oxford University)

  • Arzhang Ardavan

    (CAESR, Clarendon Laboratory, Oxford University)

  • Thomas Schenkel

    (Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA)

  • Eugene E. Haller

    (Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
    University of California, Berkeley, California 94720, USA)

  • Joel W. Ager

    (Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA)

  • S. A. Lyon

    (Princeton University, Princeton, New Jersey 08544, USA)

Abstract

Moving memories The transfer of information between the entities that do the processing and memory is crucial — and problematic — for quantum computation. In classical systems the information transfer can include a copying step, where errors can be spotted and corrected, but in quantum systems copying is fundamentally precluded. Morton et al. demonstrate a technology that could solve the problem: the coherent storage and readout of information between electron-spin processing elements and memory elements based on a nuclear spin. The system utilizes phosphorus-31 spin donors in a silicon-28 crystal. The nuclear spin acts as a memory element that can faithfully store the full state of the electron spin for more than a second, then transfer it back to the electron spin with about 90% efficiency.

Suggested Citation

  • John J. L. Morton & Alexei M. Tyryshkin & Richard M. Brown & Shyam Shankar & Brendon W. Lovett & Arzhang Ardavan & Thomas Schenkel & Eugene E. Haller & Joel W. Ager & S. A. Lyon, 2008. "Solid-state quantum memory using the 31P nuclear spin," Nature, Nature, vol. 455(7216), pages 1085-1088, October.
    • Handle: RePEc:nat:nature:v:455:y:2008:i:7216:d:10.1038_nature07295
    DOI: 10.1038/nature07295
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