IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-02982-x.html
   My bibliography  Save this article

Two-electron spin correlations in precision placed donors in silicon

Author

Listed:
  • M. A. Broome

    (University of New South Wales)

  • S. K. Gorman

    (University of New South Wales)

  • M. G. House

    (University of New South Wales)

  • S. J. Hile

    (University of New South Wales)

  • J. G. Keizer

    (University of New South Wales)

  • D. Keith

    (University of New South Wales)

  • C. D. Hill

    (The University of Melbourne)

  • T. F. Watson

    (University of New South Wales)

  • W. J. Baker

    (University of New South Wales)

  • L. C. L. Hollenberg

    (The University of Melbourne)

  • M. Y. Simmons

    (University of New South Wales)

Abstract

Substitutional donor atoms in silicon are promising qubits for quantum computation with extremely long relaxation and dephasing times demonstrated. One of the critical challenges of scaling these systems is determining inter-donor distances to achieve controllable wavefunction overlap while at the same time performing high fidelity spin readout on each qubit. Here we achieve such a device by means of scanning tunnelling microscopy lithography. We measure anti-correlated spin states between two donor-based spin qubits in silicon separated by 16 ± 1 nm. By utilising an asymmetric system with two phosphorus donors at one qubit site and one on the other (2P−1P), we demonstrate that the exchange interaction can be turned on and off via electrical control of two in-plane phosphorus doped detuning gates. We determine the tunnel coupling between the 2P−1P system to be 200 MHz and provide a roadmap for the observation of two-electron coherent exchange oscillations.

Suggested Citation

  • M. A. Broome & S. K. Gorman & M. G. House & S. J. Hile & J. G. Keizer & D. Keith & C. D. Hill & T. F. Watson & W. J. Baker & L. C. L. Hollenberg & M. Y. Simmons, 2018. "Two-electron spin correlations in precision placed donors in silicon," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-02982-x
    DOI: 10.1038/s41467-018-02982-x
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-02982-x
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-02982-x?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-02982-x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.