Decoherence imaging of spin ensembles using a scanning single-electron spin in diamond

Luan, Lan and Grinolds, Michael S. and Hong, Sungkun and Maletinsky, Patrick and Walsworth, Ronald L. and Yacoby, Amir. (2015) Decoherence imaging of spin ensembles using a scanning single-electron spin in diamond. Scientific Reports, 5 (8119). pp. 1-5.

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Official URL: http://edoc.unibas.ch/39756/

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The nitrogen-vacancy (NV) defect center in diamond has demonstrated great capability for nanoscale magnetic sensing and imaging for both static and periodically modulated target fields. However, it remains a challenge to detect and image randomly fluctuating magnetic fields. Recent theoretical and numerical works have outlined detection schemes that exploit changes in decoherence of the detector spin as a sensitive measure for fluctuating fields. Here we experimentally monitor the decoherence of a scanning NV center in order to image the fluctuating magnetic fields from paramagnetic impurities on an underlying diamond surface. We detect a signal corresponding to roughly 800 μB in 2 s of integration time, without any control on the target spins, and obtain magnetic-field spectral information using dynamical decoupling techniques. The extracted spatial and temporal properties of the surface paramagnetic impurities provide insight to prolonging the coherence of near-surface qubits for quantum information and metrology applications.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Georg H. Endress-Stiftungsprofessur für Experimentalphysik (Maletinsky)
UniBasel Contributors:Maletinsky, Patrick M.
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:29 Nov 2017 07:10
Deposited On:28 Apr 2016 08:35

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