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Nv Centers Solid State Defects

Cavity-Driven Multispectral Gain for High-Sensitivity NV Center Magnetometers

arXiv
Authors: Himanshu Kumar, Rahul Gupta, Saikat Ghosh, Himadri Shekhar Dhar, Kasturi Saha

Year

2026

Paper ID

4128

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

We report a cavity-enabled solid-state magnetometer based on an NV ensemble coupled with a dielectric cavity, achieving 12 pT/sqrt{rm{Hz}} sensitivity and a nearly threefold gain from multispectral features. The features originate from cavity-induced splitting of the NV hyperfine levels and leverages robust quantum coherence in the doubly dressed states of the system to achieve high sensitivity. We project simulated near-term sensitivities approaching 100 fT/sqrt{rm{Hz}}, close to the Johnson-Nyquist limit. Our results establish frequency multiplexing as a new operational paradigm, offering a robust and scalable quantum resource for metrology under ambient conditions.

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  • This paper contributes to the NV Centers & Solid-State Defects research area in the Quantum Articles archive.
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  • We report a cavity-enabled solid-state magnetometer based on an NV ensemble coupled with a dielectric cavity, achieving 12 pT/sqrtrmHz sensitivity and a nearly threefold gain...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.03975 [2] arXiv https://arxiv.org/abs/2601.03975 [3] Publisher https://arxiv.org/abs/2601.03975

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