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Coherence protection of spin qubits in hexagonal boron nitride

Author

Listed:
  • Andrew J. Ramsay

    (Hitachi Europe Ltd.)

  • Reza Hekmati

    (Cardiff University)

  • Charlie J. Patrickson

    (University of Exeter)

  • Simon Baber

    (University of Exeter)

  • David R. M. Arvidsson-Shukur

    (Hitachi Europe Ltd.)

  • Anthony J. Bennett

    (Cardiff University
    Cardiff University)

  • Isaac J. Luxmoore

    (University of Exeter)

Abstract

Spin defects in foils of hexagonal boron nitride are an attractive platform for magnetic field imaging, since the probe can be placed in close proximity to the target. However, as a III-V material the electron spin coherence is limited by the nuclear spin environment, with spin echo coherence times of ∽100 ns at room temperature accessible magnetic fields. We use a strong continuous microwave drive with a modulation in order to stabilize a Rabi oscillation, extending the coherence time up to ∽ 4μs, which is close to the 10 μs electron spin lifetime in our sample. We then define a protected qubit basis, and show full control of the protected qubit. The coherence times of a superposition of the protected qubit can be as high as 0.8 μs. This work establishes that boron vacancies in hexagonal boron nitride can have electron spin coherence times that are competitive with typical nitrogen vacancy centres in small nanodiamonds under ambient conditions.

Suggested Citation

  • Andrew J. Ramsay & Reza Hekmati & Charlie J. Patrickson & Simon Baber & David R. M. Arvidsson-Shukur & Anthony J. Bennett & Isaac J. Luxmoore, 2023. "Coherence protection of spin qubits in hexagonal boron nitride," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36196-7
    DOI: 10.1038/s41467-023-36196-7
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    References listed on IDEAS

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    1. Mengqi Huang & Jingcheng Zhou & Di Chen & Hanyi Lu & Nathan J. McLaughlin & Senlei Li & Mohammed Alghamdi & Dziga Djugba & Jing Shi & Hailong Wang & Chunhui Rita Du, 2022. "Wide field imaging of van der Waals ferromagnet Fe3GeTe2 by spin defects in hexagonal boron nitride," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. A. Haykal & R. Tanos & N. Minotto & A. Durand & F. Fabre & J. Li & J. H. Edgar & V. Ivády & A. Gali & T. Michel & A. Dréau & B. Gil & G. Cassabois & V. Jacques, 2022. "Decoherence of V $${}_{{{{{{{{\rm{B}}}}}}}}}^{-}$$ B − spin defects in monoisotopic hexagonal boron nitride," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. Andreas Gottscholl & Matthias Diez & Victor Soltamov & Christian Kasper & Dominik Krauße & Andreas Sperlich & Mehran Kianinia & Carlo Bradac & Igor Aharonovich & Vladimir Dyakonov, 2021. "Spin defects in hBN as promising temperature, pressure and magnetic field quantum sensors," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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    Cited by:

    1. Ruotian Gong & Guanghui He & Xingyu Gao & Peng Ju & Zhongyuan Liu & Bingtian Ye & Erik A. Henriksen & Tongcang Li & Chong Zu, 2023. "Coherent dynamics of strongly interacting electronic spin defects in hexagonal boron nitride," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Roberto Rizzato & Martin Schalk & Stephan Mohr & Jens C. Hermann & Joachim P. Leibold & Fleming Bruckmaier & Giovanna Salvitti & Chenjiang Qian & Peirui Ji & Georgy V. Astakhov & Ulrich Kentsch & Manf, 2023. "Extending the coherence of spin defects in hBN enables advanced qubit control and quantum sensing," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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