Noise spectroscopy is a powerful tool to understand what may limit the performance of a (quantum) system as well as a useful resource for the study of condensed matter. Thanks to their high sensitivity, NV centers are well suited for the study of magnetic noise at the nanoscale.
In their Nature Communications paper from 2021, Finco et al. develop an innovative approach to image complex antiferromagnetic spin textures by probing the magnetic noise in the sample at the NV frequency. Specifically, the authors report …