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Coherent quantum control of nitrogen-vacancy center spins near 1000 kelvin

Author

Listed:
  • Gang-Qin Liu

    (The Chinese University of Hong Kong)

  • Xi Feng

    (The Chinese University of Hong Kong)

  • Ning Wang

    (The Chinese University of Hong Kong)

  • Quan Li

    (The Chinese University of Hong Kong
    The Chinese University of Hong Kong)

  • Ren-Bao Liu

    (The Chinese University of Hong Kong
    The Chinese University of Hong Kong)

Abstract

Quantum coherence control usually requires low temperature environments. Even for nitrogen-vacancy center spins in diamond, a remarkable exception, the coherence signal is limited to about 700 K due to the quench of the spin-dependent fluorescence at a higher temperature. Here we overcome this limit and demonstrate quantum coherence control of the electron spins of nitrogen-vacancy centers in nanodiamonds at temperatures near 1000 K. The scheme is based on initialization and readout of the spins at room temperature and control at high temperature, which is enabled by pulse laser heating and rapid diffusion cooling of nanodiamonds on amorphous carbon films. Using the diamond magnetometry based on optically detected magnetic resonance up to 800 K, we observe the magnetic phase transition of a single nickel nanoparticle at about 615 K. This work enables nano-thermometry and nano-magnetometry in the high-temperature regime.

Suggested Citation

  • Gang-Qin Liu & Xi Feng & Ning Wang & Quan Li & Ren-Bao Liu, 2019. "Coherent quantum control of nitrogen-vacancy center spins near 1000 kelvin," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09327-2
    DOI: 10.1038/s41467-019-09327-2
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    Cited by:

    1. Alexander Savvin & Alexander Dormidonov & Evgeniya Smetanina & Vladimir Mitrokhin & Evgeniy Lipatov & Dmitriy Genin & Sergey Potanin & Alexander Yelisseyev & Viktor Vins, 2021. "NV– diamond laser," Nature Communications, Nature, vol. 12(1), pages 1-8, December.

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