Nanoengineered diamond waveguide as a robust bright platform for nanomagnetometry using shallow nitrogen vacancy centers.

  title={Nanoengineered diamond waveguide as a robust bright platform for nanomagnetometry using shallow nitrogen vacancy centers.},
  author={Seyed Ali Momenzadeh and Rainer J. St{\"o}hr and Felipe F{\'a}varo de Oliveira and Andreas Brunner and Andrej Denisenko and Sen Yang and Friedemann Reinhard and J{\"o}rg Wrachtrup},
  journal={Nano letters},
  volume={15 1},
Photonic structures in diamond are key to most of its application in quantum technology. Here, we demonstrate tapered nanowaveguides structured directly onto the diamond substrate hosting shallow-implanted nitrogen vacancy (NV) centers. By optimization based on simulations and precise experimental control of the geometry of these pillar-shaped nanowaveguides, we achieve a net photon flux up to ∼ 1.7 × 10(6) s(-1). This presents the brightest monolithic bulk diamond structure based on single NV… 
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