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)
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)
*Funded by Australian Research Council (DP180100969) and DST (AUSMURI00002). Sandia National
Laboratories is a multi-missions laboratory managed and operated by National Technology and
Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for
DOE’s National Nuclear Security Administration under contract DE-NA0003525.
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Presenters
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Mark Johnson
- UNSW Sydney