This research demonstrates improved dynamic range through closed-loop frequency tracking in quantum diamond magnetometers, benefiting electronic vehicles and geophysical surveys.
We demonstrate a closed-loop frequency-locking scheme to simultaneously track multiple Zeeman-split frequency pairs and thus improve the dynamic range of our diamond magnetometer for measuring residual battery charge in electronic vehicles and for geophysical surveying.
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Chatterjee et al. (2025) studied this question.
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