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Showing 1–12 of 12 results
Advanced filters: Author: Hitoshi Sumiya Clear advanced filters

  • Monocrystalline diamond is the stiffest and hardest material known to man. Here, the authors reveal that polycrystalline diamond synthesized by a direct-conversion method from graphite displays higher elastic constants than its monocrystalline counterpart.

    • Kenichi Tanigaki
    • Hirotsugu Ogi
    • Hassel Ledbetter
    Research
    Nature Communications
    Volume: 4, P: 1-7

  • High sensitivity in quantum sensing comes often at the expense of other figures of merit, usually resulting in distortion. Here, the authors propose a protocol with good sensitivity, readout linearity and high frequency resolution, and benchmark it through signal measurements at audio bands with NV centers.

    • Chen Zhang
    • Durga Dasari
    • Jörg Wrachtrup
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-10

  • Signals that look the same from their low-order correlations can often be distinguished by looking at higher-order ones. Here, the authors exploit the sensitivity of quantum nonlinear spectroscopy to fourth-order correlations to identify Gaussian noises, random-phased AC fields, and quantum spins.

    • Jonas Meinel
    • Vadim Vorobyov
    • J. Wrachtrup
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-9

  • High-resolution microwave detection with NV centers in diamond is currently applicable to signals with frequencies below 10 MHz, thus limiting their range of applications. Here, the authors demonstrate detection of GHz signals with sub-Hz spectral resolution, not limited by the quantum sensor lifetime.

    • Jonas Meinel
    • Vadim Vorobyov
    • Jörg Wrachtrup
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Quantum sensors can have exceptional properties but the limits on their performance involve nonclassical effects such as quantum backaction. Here the authors show how to mitigate the effects of backaction on the spectral resolution of an NV centre nuclear spin sensor by controlling the measurement strength.

    • Matthias Pfender
    • Ping Wang
    • Jörg Wrachtrup
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-8

  • Dissipation of the sensor is a limiting factor in metrology. Here, Pfender et al. suppress this effect employing the nuclear spin of an NV centre for robust intermediate storage of classical NMR information, allowing then to record single-spin NMR spectra with 13 Hz resolution at room temperature.

    • Matthias Pfender
    • Nabeel Aslam
    • Jörg Wrachtrup
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-12

  • Superradiance is reported from an ensemble of nitrogen–vacancy centres coupled to a microwave resonator in the fast cavity limit.

    • Andreas Angerer
    • Kirill Streltsov
    • Johannes Majer
    Research
    Nature Physics
    Volume: 14, P: 1168-1172

  • Nitrogen-vacancy centers in diamond offer a promising platform for quantum applications but their optical and spin properties can be hampered by imperfections of the host crystal. Here, nitrogen-vacancy centers are created in high-pressure high-temperature diamond of high crystalline quality, demonstrating a small inhomogeneous broadening of the spin and optical transitions.

    • Rémi Blinder
    • Yuliya Mindarava
    • Junichi Isoya
    ResearchOpen Access
    Communications Materials
    Volume: 5, P: 1-10

  • Heterodyne detection is vastly used to overcome the intrinsic electron spin lifetime limiting the spectral resolution in NMR experiments based on nitrogen vacancy platforms, but the application of this technique at high magnetic fields is yet a challenge. The authors introduce heterodyne detection method applicable at high magnetic fields.

    • Jonas Meinel
    • MinSik Kwon
    • Jörg Wrachtrup
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-7