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This magnetometer achieves 23nT/Hz sensitivity in microscopic scale using diamond cavities and NV samples.
We demonstrate a fiber-coupled, resonant, all-diamond magnetometer that achieves high sensitivity (23nT/Hz) in a microscopic (< 8µm 3 ) package. Combining cavities and dense NV samples, our resonator could realize an all-on-chip diamond magnetometer.
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Sorensen et al. (2025) studied this question.
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