Probing surface noise with depth-calibrated spins in diamond

2014/02/21 by Bryan A. Myers, Matthieu C. Dartiailh, Kenichi Ohno +3 · 2 citations
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.113.027602

17 pages, 4 figures

arxiv created 2014/02/21 · arxiv updated 2014/07/11

Abstract

Sensitive nanoscale magnetic resonance imaging (MRI) of target spins using nitrogen-vacancy (NV) centers in diamond will require a quantitative understanding of dominant noise at the surface. We probe this noise by applying dynamical decoupling to shallow NVs at calibrated depths. Results support a model of NV dephasing by a surface bath of electronic spins having a correlation rate of 200 kHz, much faster than that of the bulk N spin bath. Our method of combining nitrogen delta-doping growth and nanoscale depth imaging paves a way for studying spin noise present in diverse material surfaces.

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• Entanglement-Enhanced Nanoscale Single-Spin Sensing
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