Magnetic field imaging with nitrogen-vacancy ensembles

  title={Magnetic field imaging with nitrogen-vacancy ensembles},
  author={Linh M. Pham and David Le Sage and Paul L Stanwix and Tai Kong Yeung and Derek W Glenn and Andrey Trifonov and Paola Cappellaro and Philip R. Hemmer and Mikhail D. Lukin and Hongsik Park and Amir Yacoby and Ronald L. Walsworth},
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… CONTINUE READING
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