Wideband microwave resonator for NV center vector magnetometry
Abstract
The nitrogen-vacancy (NV) color center in diamond has found applications in magnetometry across various geometrical scales. In particular, vector magnetometry using hand-held devices with low power consumption is of interest for mobile and geological applications. However, such a device requires efficient driving of the four different orientations of the NV center, thus placing demands on a broadband microwave resonator that provides a uniform and highly insensitive microwave magnetic field at the resonance frequencies of the NV centers. Here, we propose a unique planar resonator design that enables efficient driving of all four orientations of NV color centers over a 100 MHz range with only 0.5 W of microwave input power and 250 mW of laser power, allowing vector magnetic field measurements. Using the planar resonator to drive NV centers in diamond, a compact vector magnetometer was fabricated and experimentally studied. The sensitivity of the device is about 1.2 nT/√(Hz). While this is not a record sensitivity for diamond-based magnetometers, this device occupies its own niche as a compact hand-held magnetometer.
Related
- Fisher-Information Recovery in Superconducting-Qubit Magnetometry with Squeezed-Microwave Readout
- High Sensitivity Fiber-Coupled Vector Magnetometry using NV Centers in a Femtosecond Laser-Written Diamond Waveguide
- Coupling of two individual magnon resonators via a superconducting microwave resonator operating in the strong coupling regime
- Sweep-Direction-Dependent Level-Attraction- and Level-Repulsion-Like Signatures in a Twisted, Helically Corrugated Microwave Resonator
- Coherent and dissipative coupling of multiple photon-magnon hybrids in a chiral microwave resonator
BibTeX
@misc{bolshedvorskii2026wideband,
title = {{Wideband microwave resonator for NV center vector magnetometry}},
author = {S. V. Bolshedvorskii and E. A. Koreshin and V. V. Soshenko and I. S. Cojocaru and S. M. Drofa and P. G. Vilyuzhanina and N. I. Salangin and A. M. Kozodaev and A. Chernyavskiy and A. N. Smolyaninov and P. V. Kapitanova and S. Ya. Kilin and A. V. Akimov},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.13379},
eprint = {2610.13379},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.13379},
}
RIS
TY - UNPB
TI - Wideband microwave resonator for NV center vector magnetometry
AU - S. V. Bolshedvorskii
AU - E. A. Koreshin
AU - V. V. Soshenko
AU - I. S. Cojocaru
AU - S. M. Drofa
AU - P. G. Vilyuzhanina
AU - N. I. Salangin
AU - A. M. Kozodaev
AU - A. Chernyavskiy
AU - A. N. Smolyaninov
AU - P. V. Kapitanova
AU - S. Ya. Kilin
AU - A. V. Akimov
PY - 2026
DA - 2026/10/09
PB - arXiv
DO - 10.48550/arxiv.2610.13379
UR - https://arxiv.org/abs/2610.13379
AB - The nitrogen-vacancy (NV) color center in diamond has found applications in magnetometry across various geometrical scales. In particular, vector magnetometry using hand-held devices with low power consumption is of interest for mobile and geological applications. However, such a device requires efficient driving of the four different orientations of the NV center, thus placing demands on a broadband microwave resonator that provides a uniform and highly insensitive microwave magnetic field at the resonance frequencies of the NV centers. Here, we propose a unique planar resonator design that enables efficient driving of all four orientations of NV color centers over a 100 MHz range with only 0.5 W of microwave input power and 250 mW of laser power, allowing vector magnetic field measurements. Using the planar resonator to drive NV centers in diamond, a compact vector magnetometer was fabricated and experimentally studied. The sensitivity of the device is about 1.2 nT/√(Hz). While this is not a record sensitivity for diamond-based magnetometers, this device occupies its own niche as a compact hand-held magnetometer.
ER -