Diamonds with a high density of nitrogen-vacancy centers for magnetometry applications

V. M. Acosta, E. Bauch, M. P. Ledbetter, C. Santori, K.-M. C. Fu, P. E. Barclay, R. G. Beausoleil, H. Linget, J. F. Roch, F. Treussart, S. Chemerisov, W. Gawlik, and D. Budker
Phys. Rev. B 80, 115202 – Published 9 September 2009

Abstract

Nitrogen-vacancy (NV) centers in millimeter-scale diamond samples were produced by irradiation and subsequent annealing under varied conditions. The optical and spin-relaxation properties of these samples were characterized using confocal microscopy, visible and infrared absorption, and optically detected magnetic resonance. The sample with the highest NV concentration, approximately 16 ppm (2.8×1018cm3), was prepared with no observable traces of neutrally charged vacancy defects. The effective transverse spin-relaxation time for this sample was T2=118(48)ns, predominately limited by residual paramagnetic nitrogen which was determined to have a concentration of 49(7) ppm. Under ideal conditions, the shot-noise limited sensitivity is projected to be 150fT/Hz for a 100μm-scale magnetometer based on this sample. Other samples with NV concentrations from 0.007 to 12 ppm and effective relaxation times ranging from 27 to over 291 ns were prepared and characterized.

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  • Received 11 April 2009

DOI:https://doi.org/10.1103/PhysRevB.80.115202

©2009 American Physical Society

Authors & Affiliations

V. M. Acosta1,*, E. Bauch1,2, M. P. Ledbetter1, C. Santori3, K.-M. C. Fu3, P. E. Barclay3, R. G. Beausoleil3, H. Linget4, J. F. Roch5, F. Treussart5, S. Chemerisov6, W. Gawlik7, and D. Budker1,8,†

  • 1Department of Physics, University of California, Berkeley, California 94720-7300, USA
  • 2Technische Universität Berlin, Hardenbergstraße 28, 10623 Berlin, Germany
  • 3Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, California 94304, USA
  • 4Ecole Normale Supérieure de Cachan, 61 Avenue du Président Wilson, 94235 Cachan Cedex, France
  • 5Laboratoire de Photonique Quantique et Moléculaire (CNRS UMR 8537), Ecole Normale Supérieure de Cachan, 61 Avenue du Président Wilson, 94235 Cachan Cedex, France
  • 6Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 7Center for Magneto-Optical Research, Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
  • 8Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

  • *vmacosta@berkeley.edu
  • budker@berkeley.edu

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Vol. 80, Iss. 11 — 15 September 2009

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