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Solid-state electronic spin coherence time approaching one second

Author

Listed:
  • N. Bar-Gill

    (Harvard-Smithsonian Center for Astrophysics
    Harvard University)

  • L.M. Pham

    (School of Engineering and Applied Sciences, Harvard University)

  • A. Jarmola

    (University of California)

  • D. Budker

    (University of California
    Lawrence Berkeley National Laboratory)

  • R.L. Walsworth

    (Harvard-Smithsonian Center for Astrophysics
    Harvard University)

Abstract

Solid-state spin systems such as nitrogen-vacancy colour centres in diamond are promising for applications of quantum information, sensing and metrology. However, a key challenge for such solid-state systems is to realize a spin coherence time that is much longer than the time for quantum spin manipulation protocols. Here we demonstrate an improvement of more than two orders of magnitude in the spin coherence time (T2) of nitrogen-vacancy centres compared with previous measurements: T2≈0.6 s at 77 K. We employed dynamical decoupling pulse sequences to suppress nitrogen-vacancy spin decoherence, and found that T2 is limited to approximately half of the longitudinal spin relaxation time over a wide range of temperatures, which we attribute to phonon-induced decoherence. Our results apply to ensembles of nitrogen-vacancy spins, and thus could advance quantum sensing, enable squeezing and many-body entanglement, and open a path to simulating driven, interaction-dominated quantum many-body Hamiltonians.

Suggested Citation

  • N. Bar-Gill & L.M. Pham & A. Jarmola & D. Budker & R.L. Walsworth, 2013. "Solid-state electronic spin coherence time approaching one second," Nature Communications, Nature, vol. 4(1), pages 1-6, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2771
    DOI: 10.1038/ncomms2771
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    1. E. Garlatti & A. Albino & S. Chicco & V. H. A. Nguyen & F. Santanni & L. Paolasini & C. Mazzoli & R. Caciuffo & F. Totti & P. Santini & R. Sessoli & A. Lunghi & S. Carretta, 2023. "The critical role of ultra-low-energy vibrations in the relaxation dynamics of molecular qubits," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Chen Zhang & Durga Dasari & Matthias Widmann & Jonas Meinel & Vadim Vorobyov & Polina Kapitanova & Elizaveta Nenasheva & Kazuo Nakamura & Hitoshi Sumiya & Shinobu Onoda & Junichi Isoya & Jörg Wrachtru, 2022. "Quantum-assisted distortion-free audio signal sensing," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Durga Bhaktavatsala Rao Dasari & Sen Yang & Arnab Chakrabarti & Amit Finkler & Gershon Kurizki & Jörg Wrachtrup, 2022. "Anti-Zeno purification of spin baths by quantum probe measurements," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    4. 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.
    5. 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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