High Sensitivity Magnetometry with a Fibre-coupled Diamond Sensor

ORAL

Abstract

The negatively charged nitrogen-vacancy (NV) centre in diamond is one of the most studied solid-state defects because it has spin states that can be initialised and detected optically at room temperature [1]. A key technological development is the use of an ensemble of these defects for applications in high sensitivity magnetometry [2] which may lead to the development of medical devices for techniques such as magnetocardiography [3]. We present a fiber-coupled system which aims to detect the magnetic fields produced by electrical currents in the heart.

[1] M. Doherty, N. Manson, P. Delaney, F. Jelezko, J. Wrachtrup and L. Hollenberg, Phys. Rep., 528, 1 (2013).
[2] J. F. Barry, M. J. Turner, J. M. Schloss, D. R. Glenn, Y. Song, M. D. Lukin, H. Park, and R. L. Walsworth, PNAS, 113, 14133 (2016).
[3] M. W. Dale and G. W. Morley, arXiv:1705.01994 (2017).

*We gratefully acknowledge the funding provided by the Engineering and Physical Sciences Research Council and the Royal Society of the United Kingdom.

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Presenters

  • Rajesh Patel

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

Authors

  • Rajesh Patel

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

  • Angelo Frangeskou

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
    • University of Warwick
    • Department of Physics, University of Warwick

  • Guy Stimpson

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

  • Eleanor Nichols

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

  • William Thornley

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

  • Ben G Breeze

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK

  • Ben Green

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
    • University of Warwick
    • Department of Physics, University of Warwick

  • Shinobu Onoda

    • Takasaki Advanced Radiation Research Institute
    • Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan

  • Junichi Isoya

    • University of Tsukuba
    • Research Center for Knowledge Communities, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan.

  • Gavin Morley

    • Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
    • University of Warwick
    • Department of Physics, University of Warwick