29Si nuclear spins as a resource for donor spin qubits in silicon

Gary Wolfowicz, Pierre André Mortemousque, Roland Guichard, Stephanie Simmons, Mike L W Thewalt, Kohei M Itoh, John J L Morton

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of 29Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby 29Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction (QEC), including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round QEC using donors in silicon.

Original languageEnglish
Article number023021
JournalNew Journal of Physics
Volume18
Issue number2
DOIs
Publication statusPublished - 2016 Feb 5

Fingerprint

nuclear spin
resources
registers
electron spin
silicon
routes
solid state
ionization
atoms

Keywords

  • decoherence
  • donors in silicon
  • nuclear spins
  • quantum error correction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Wolfowicz, G., Mortemousque, P. A., Guichard, R., Simmons, S., Thewalt, M. L. W., Itoh, K. M., & Morton, J. J. L. (2016). 29Si nuclear spins as a resource for donor spin qubits in silicon. New Journal of Physics, 18(2), [023021]. https://doi.org/10.1088/1367-2630/18/2/023021

29Si nuclear spins as a resource for donor spin qubits in silicon. / Wolfowicz, Gary; Mortemousque, Pierre André; Guichard, Roland; Simmons, Stephanie; Thewalt, Mike L W; Itoh, Kohei M; Morton, John J L.

In: New Journal of Physics, Vol. 18, No. 2, 023021, 05.02.2016.

Research output: Contribution to journalArticle

Wolfowicz, G, Mortemousque, PA, Guichard, R, Simmons, S, Thewalt, MLW, Itoh, KM & Morton, JJL 2016, '29Si nuclear spins as a resource for donor spin qubits in silicon', New Journal of Physics, vol. 18, no. 2, 023021. https://doi.org/10.1088/1367-2630/18/2/023021
Wolfowicz G, Mortemousque PA, Guichard R, Simmons S, Thewalt MLW, Itoh KM et al. 29Si nuclear spins as a resource for donor spin qubits in silicon. New Journal of Physics. 2016 Feb 5;18(2). 023021. https://doi.org/10.1088/1367-2630/18/2/023021
Wolfowicz, Gary ; Mortemousque, Pierre André ; Guichard, Roland ; Simmons, Stephanie ; Thewalt, Mike L W ; Itoh, Kohei M ; Morton, John J L. / 29Si nuclear spins as a resource for donor spin qubits in silicon. In: New Journal of Physics. 2016 ; Vol. 18, No. 2.
@article{68c5f00457e84cd49953c01935facb78,
title = "29Si nuclear spins as a resource for donor spin qubits in silicon",
abstract = "Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of 29Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby 29Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction (QEC), including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round QEC using donors in silicon.",
keywords = "decoherence, donors in silicon, nuclear spins, quantum error correction",
author = "Gary Wolfowicz and Mortemousque, {Pierre Andr{\'e}} and Roland Guichard and Stephanie Simmons and Thewalt, {Mike L W} and Itoh, {Kohei M} and Morton, {John J L}",
year = "2016",
month = "2",
day = "5",
doi = "10.1088/1367-2630/18/2/023021",
language = "English",
volume = "18",
journal = "New Journal of Physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - 29Si nuclear spins as a resource for donor spin qubits in silicon

AU - Wolfowicz, Gary

AU - Mortemousque, Pierre André

AU - Guichard, Roland

AU - Simmons, Stephanie

AU - Thewalt, Mike L W

AU - Itoh, Kohei M

AU - Morton, John J L

PY - 2016/2/5

Y1 - 2016/2/5

N2 - Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of 29Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby 29Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction (QEC), including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round QEC using donors in silicon.

AB - Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of 29Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby 29Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction (QEC), including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round QEC using donors in silicon.

KW - decoherence

KW - donors in silicon

KW - nuclear spins

KW - quantum error correction

UR - http://www.scopus.com/inward/record.url?scp=84960156219&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84960156219&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/18/2/023021

DO - 10.1088/1367-2630/18/2/023021

M3 - Article

AN - SCOPUS:84960156219

VL - 18

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 2

M1 - 023021

ER -