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arXiv · 1402.5392

Probing surface noise with depth-calibrated spins in diamond

Bryan A. Myers·Matthieu C. Dartiailh·Kenichi Ohno·Ananda Das·David D. Awschalom·Ania C. Bleszynski Jayich
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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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Bryan A. Myers, Matthieu C. Dartiailh, Kenichi Ohno, Ananda Das, David D. Awschalom, Ania C. Bleszynski Jayich. 2014-02-21. Probing surface noise with depth-calibrated spins in diamond. https://doi.org/10.1103/physrevlett.113.027602

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