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Coherent electrical control of a single high-spin nucleus in silicon

ORAL

Abstract

We report the discovery of Nuclear Electric Resonance (NER) in a single 123 Sb donor, implanted in a
silicon nanoelectronic device [1]. NER enables the coherent control of a high-spin nucleus through the
electrical modulation of its quadrupole coupling. This effect was first proposed in the 1960s but never
observed in a non-polar, non-piezoelectric material, or in a single atom. Our experiments are
quantitatively matched by a microscopic theory that elucidates how an electric field distorts the bond
orbital around the atom and results in a modulation of the electric field gradient at the nucleus. The
observation of a large quadrupole splitting in a single 123 Sb nucleus paves the way to the realization of a
quantum chaotic “kicked-top” model [2] or the encoding of quantum information in an 8-level nuclear
spin qudit.

[1] S. Asaad et al., arXiv:1906.01086 (2019)
[2] V. Mourik et al., Phys. Rev. E 98, 042206 (2018)

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Presenters

  • Mark Johnson

    UNSW Sydney

Authors

  • Mark Johnson

    UNSW Sydney

  • Serwan Asaad

    UNSW Sydney

  • Vincent Mourik

    UNSW Sydney

  • Benjamin Joecker

    Center for Quantum Computation and Communication Technology, University of New South Wales, UNSW Sydney

  • Andrew Baczewski

    Sandia National Laboratories

  • Hannes Roland Firgau

    UNSW Sydney

  • Mateusz T Madzik

    UNSW Sydney

  • Vivien Schmitt

    UNSW Sydney, Univ of New South Wales

  • Jarryd Pla

    Center for Quantum Computation and Communication Technology, University of New South Wales, UNSW Sydney

  • Fay E. Hudson

    UNSW Sydney, Univ of New South Wales, University of New South Wales

  • Kohei M Itoh

    Keio University

  • Jeffrey C McCallum

    University of Melbourne

  • Andrew Steven Dzurak

    UNSW Sydney, Univ of New South Wales, University of New South Wales

  • Arne Laucht

    UNSW Sydney, University of New South Wales

  • Andrea Morello

    Center for Quantum Computation and Communication Technology, University of New South Wales, UNSW Sydney, Univ of New South Wales, University of New South Wales