Magnetometry of random ac magnetic fields using a single nitrogen-vacancy center
Magnetometry of random ac magnetic fields using a single nitrogen-vacancy center
We report on the use of a single nitrogen-vacancy (NV) center to probe fluctuating ac magnetic fields. Using engineered currents to induce random changes in the field amplitude and phase, we show that stochastic fluctuations reduce the NV center sensitivity and, in general, make the NV response field-dependent. We also …