TY - JOUR T1 - Optical magnetic resonance imaging with nanoscale resolution and compressed sensing speed-up JF - Nat. Nanotechnol. Y1 - 2015 A1 - Arai, Keigo A1 - Belthangady, Chinmay A1 - Zhang, Huiliang A1 - Nir Bar-Gill A1 - DeVience, Stephen A1 - Cappellaro, Paola A1 - Lukin, Mikhail D. A1 - Yacoby, Amir A1 - Walsworth, Ronald L. AB -

Optically detected magnetic resonance using nitrogen-vacancy (NV) colour centres in diamond is a leading modality for nanoscale magnetic field imaging, as it provides single electron spin sensitivity, three-dimensional resolution better than 1 nm (ref. 5) and applicability to a wide range of physical and biological samples under ambient conditions. To date, however, NV-diamond magnetic imaging has been performed using 'real-space' techniques, which are either limited by optical diffraction to ∼250 nm resolution or require slow, point-by-point scanning for nanoscale resolution, for example, using an atomic force microscope, magnetic tip, or super-resolution optical imaging. Here, we introduce an alternative technique of Fourier magnetic imaging using NV-diamond. In analogy with conventional magnetic resonance imaging (MRI), we employ pulsed magnetic field gradients to phase-encode spatial information on NV electronic spins in wavenumber or 'k-space' followed by a fast Fourier transform to yield real-space images with nanoscale resolution, wide field of view and compressed sensing speed-up.

PB - Nature Publishing Group VL - Advanced online publication UR - http://dx.doi.org/10.1038/nnano.2015.171 ER -