Optimized microwave delivery structures for quantum diamond microscopes

POSTER

Abstract

Magnetic field sensors and imagers employing nitrogen vacancy (NV) centers in diamond require strong, uniform microwave (MW) fields near 3 GHz. We present a new design for a planar waveguide structure fabricated on silicon carbide (SiC), which combines homogeneous microwave delivery with the heat-spreading benefits of SiC. We perform finite element simulations in COMSOL, we fabricate and test MW structures, and we compare experimental performance with simulation results. We demonstrate optimized MW power delivery and improved MW field uniformity. We implement these MW delivery structures in quantum diamond microscopes (QDMs) to improve magnetic imaging performance in fields ranging from Earth and planetary sciences to biology.

Presenters

  • Yuan Zhu

    • University of Science and Technology of China

Authors

  • Yuan Zhu

    • University of Science and Technology of China

  • Matthew J Turner

    • Physics, Harvard University
    • Harvard University

  • Raisa Trubko

    • Physics, Harvard University

  • Jennifer Schloss

    • Massachusetts Institute of Technology
    • Physics, Massachusetts Institute of Technology
    • MIT

  • Diana Prado Lopes Aude Craik

    • Harvard University
    • Physics, Harvard University

  • Ronald L Walsworth

    • Harvard-Smithsonian Center for Astrophysics & Department of Physics, Harvard University & Center for Brain Science, Harvard University
    • Harvard University
    • Harvard-Smithsonian CFA
    • Harvard-Smithsonian CfA
    • Smithsonian - CFA, Harvard University