Wideband Covariance Magnetometry below the Diffraction LimitRemoveXuan Hoang Le, Pavel E. Dolgirev, Piotr Put, Eric L. Peterson, Arjun Pillai, Alexander A. Zibrov, Eugene Demler, Hongkun Park, and Mikhail D. LukinPhys. Rev. Lett. 135, 170803 (2025)