Superresolution optical magnetic imaging and spectroscopy using individual electronic spins in diamond
Authors: Jaskula JC, Bauch E, Arroyo-Camejo S, Lukin MD, Hell SW, Trifonov AS, Walsworth RL
CellNetworks People: Hell Stefan
Journal: Opt Express. 2017 May 15;25(10):11048-11064. doi: 10.1364/OE.25.011048

Nitrogen vacancy (NV) color centers in diamond are a leading modality for both superresolution optical imaging and nanoscale magnetic field sensing. In this work, we address the key challenge of performing optical magnetic imaging and spectroscopy selectively on multiple NV centers that are located within a diffraction-limited field-of-view. We use spin-RESOLFT microscopy to enable precision nanoscale mapping of magnetic field patterns with resolution down to ~20 nm, while employing a low power optical depletion beam. Moreover, we use a shallow NV to demonstrate the detection of proton nuclear magnetic resonance (NMR) signals exterior to the diamond, with 50 nm lateral imaging resolution and without degrading the proton NMR linewidth.