Abstract
Nitrogen-vacancy centers (NVCs) in diamond are being explored for future quantum technologies, and in particular ensembles of NVC are the basis for sensitive magnetometers. We present a fiber-coupled NVC magnetometer with an unshielded sensitivity of in the frequency range of 10–150 Hz at room temperature. This takes advantage of low-strain diamond, lenses for fiber coupling and optimization of microwave modulation frequency, modulation amplitude, and power. Fiber coupling means the sensor can be conveniently brought within 2 mm of the object under study.
1 More- Received 3 March 2020
- Revised 11 September 2020
- Accepted 14 September 2020
DOI:https://doi.org/10.1103/PhysRevApplied.14.044058
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society