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Suppression of spin-bath dynamics for improved coherence of multi-spin-qubit systems

Author

Listed:
  • N. Bar-Gill

    (Harvard-Smithsonian Center for Astrophysics
    Harvard University)

  • L.M. Pham

    (School of Engineering and Applied Sciences, Harvard University)

  • C. Belthangady

    (Harvard-Smithsonian Center for Astrophysics)

  • D. Le Sage

    (Harvard-Smithsonian Center for Astrophysics)

  • P. Cappellaro

    (MIT)

  • J.R. Maze

    (Pontificia Universidad Catolica de Chile)

  • M.D. Lukin

    (Harvard University)

  • A. Yacoby

    (Harvard University)

  • R. Walsworth

    (Harvard-Smithsonian Center for Astrophysics
    Harvard University)

Abstract

Multi-qubit systems are crucial for the advancement and application of quantum science. Such systems require maintaining long coherence times while increasing the number of qubits available for coherent manipulation. For solid-state spin systems, qubit coherence is closely related to fundamental questions of many-body spin dynamics. Here we apply a coherent spectroscopic technique to characterize the dynamics of the composite solid-state spin environment of nitrogen-vacancy colour centres in room temperature diamond. We identify a possible new mechanism in diamond for suppression of electronic spin-bath dynamics in the presence of a nuclear spin bath of sufficient concentration. This suppression enhances the efficacy of dynamical decoupling techniques, resulting in increased coherence times for multi-spin-qubit systems, thus paving the way for applications in quantum information, sensing and metrology.

Suggested Citation

  • N. Bar-Gill & L.M. Pham & C. Belthangady & D. Le Sage & P. Cappellaro & J.R. Maze & M.D. Lukin & A. Yacoby & R. Walsworth, 2012. "Suppression of spin-bath dynamics for improved coherence of multi-spin-qubit systems," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1856
    DOI: 10.1038/ncomms1856
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    Cited by:

    1. Yu-Xin Wang & Aashish A. Clerk, 2021. "Intrinsic and induced quantum quenches for enhancing qubit-based quantum noise spectroscopy," Nature Communications, Nature, vol. 12(1), pages 1-14, December.
    2. Jia-Shiang Chen & Kasidet Jing Trerayapiwat & Lei Sun & Matthew D. Krzyaniak & Michael R. Wasielewski & Tijana Rajh & Sahar Sharifzadeh & Xuedan Ma, 2023. "Long-lived electronic spin qubits in single-walled carbon nanotubes," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. 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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