Data set for Wide-field Fourier magnetic imaging with electron spins in diamond：research data

Purpose of the datasetThis is an experimental dataset in support of the study titled "Wide-field Fourier magnetic imaging with electron spins in diamond". This is an experimental dataset to support the study entitled "Wide-field Fourier magnetic imaging with electron spins in diamond". For the images that appear in the article, the original experimental data can be obtained from this dataset. The data for each image is saved in a separate folder in .mat format, and the data analysis code is provided in the dataset in .m file format. To obtain the images in the article, the .m file can be opened with matlab software and run directly.AbstractWide-field magnetic imaging based on nitrogen-vacancy (NV) centers in diamond has been shown the applicability in material and biological science. However, the spatial resolution is limited by the optical diffraction limit (>200 nm) due to the optical real-space localization and readout of NV centers. Here, we report the wide-field Fourier magnetic imaging technique to improve spatial resolution beyond the optical diffraction limit while maintaining the large field of view. Our method relies on widefield pulsed magnetic field gradient encoding of NV spins and Fourier transform under pixel-dependent spatial filters. We have improved spatial resolution by a factor of 20 compared to the optical resolution and demonstrated the wide-field super-resolution magnetic imaging of a gradient magnetic field. This technique paves a way for efficient magnetic imaging of large-scale fine structures at the nanoscale.