NMR technique for determining the depth of shallow nitrogen-vacancy centers in diamond

Linh M. Pham, Stephen J. DeVience, Francesco Casola, Igor Lovchinsky, Alexander O. Sushkov, Eric Bersin, Junghyun Lee, Elana Urbach, Paola Cappellaro, Hongkun Park, Amir Yacoby, Mikhail Lukin, and Ronald L. Walsworth
Phys. Rev. B 93, 045425 – Published 25 January 2016

Abstract

We demonstrate a robust experimental method for determining the depth of individual shallow nitrogen-vacancy (NV) centers in diamond with 1 nm uncertainty. We use a confocal microscope to observe single NV centers and detect the proton nuclear magnetic resonance (NMR) signal produced by objective immersion oil, which has well understood nuclear spin properties, on the diamond surface. We determine the NV center depth by analyzing the NV NMR data using a model that describes the interaction of a single NV center with the statistically polarized proton spin bath. We repeat this procedure for a large number of individual, shallow NV centers and compare the resulting NV depths to the mean value expected from simulations of the ion implantation process used to create the NV centers, with reasonable agreement.

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  • Received 18 August 2015
  • Revised 6 November 2015

DOI:https://doi.org/10.1103/PhysRevB.93.045425

©2016 American Physical Society

Authors & Affiliations

Linh M. Pham1, Stephen J. DeVience2, Francesco Casola1, Igor Lovchinsky3, Alexander O. Sushkov2,3,*, Eric Bersin3, Junghyun Lee4, Elana Urbach3, Paola Cappellaro5, Hongkun Park2,3,6, Amir Yacoby7,3, Mikhail Lukin3, and Ronald L. Walsworth1,3,6,†

  • 1Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, Massachusetts 02138, USA
  • 2Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St., Cambridge, Massachusetts 02138, USA
  • 3Department of Physics, Harvard University, 17 Oxford St., Cambridge, Massachusetts 02138, USA
  • 4Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts 02139, USA
  • 5Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts 02139, USA
  • 6Center for Brain Science, Harvard University, 52 Oxford St., Cambridge, Massachusetts 02138, USA
  • 7School of Engineering and Applied Sciences, Harvard University, 15 Oxford St., Cambridge, Massachusetts 02138, USA

  • *Current address: Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
  • Corresponding author: rwalsworth@cfa.harvard.edu

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Vol. 93, Iss. 4 — 15 January 2016

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