Magnetic field imaging with nitrogen-vacancy ensembles Academic Article uri icon


  • We demonstrate a method of imaging spatially varying magnetic fields using a thin layer of nitrogen-vacancy (NV) centers at the surface of a diamond chip. Fluorescence emitted by the two-dimensional NV ensemble is detected by a CCD array, from which a vector magnetic field pattern is reconstructed. As a demonstration, ac current is passed through wires placed on the diamond chip surface, and the resulting ac magnetic field patterns are imaged using an echo-based technique with sub-micron resolution over a 140?m140?m field of view, giving single-pixel sensitivity 100 nT/p Hz. We discuss ongoing efforts to further improve the sensitivity, as well as potential bioimaging applications such as real-time imaging of activity in functional, cultured networks of neurons. IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

published proceedings

  • New Journal of Physics

altmetric score

  • 9

author list (cited authors)

  • Pham, L. M., Le Sage, D., Stanwix, P. L., Yeung, T. K., Glenn, D., Trifonov, A., ... Walsworth, R. L.

citation count

  • 210

complete list of authors

  • Pham, LM||Le Sage, D||Stanwix, PL||Yeung, TK||Glenn, D||Trifonov, A||Cappellaro, P||Hemmer, PR||Lukin, MD||Park, H||Yacoby, A||Walsworth, RL

publication date

  • April 2011