Highly sensitive compact quantum sensor with NV center in angle-shaped diamond
Yuta Kainuma, Yuji Hatano, Takayuki Shibata +6 more
Magnetometers using ensemble nitrogen-vacancy (NV) centers are promising because of their ability to measure magnetic fields in a variety of environments. To achieve high magnetic sensitivity, high collection efficiency of the fluorescence from the NV centers is essential. Due to the high refractive index of diamond, some of the photons from NVs diffuse to the sides of the diamond substrate[1]. In this study, we propose a method to improve the light collection efficiency by polishing the sides of the 12C-enriched chemical vapor deposition (CVD) growth diamond at an angle of 30 degrees and investigating the magnetic sensitivity.
•Nov 17, 2023•0 citations