Die u:cris Detailansicht:

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

Autor(en)
Lan Luan, Michael S. Grinolds, Sungkun Hong, Patrick Maletinsky, Ronald L. Walsworth, Amir Yacoby
Abstrakt

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 800μ

B 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.

Organisation(en)
Quantenoptik, Quantennanophysik und Quanteninformation
Externe Organisation(en)
Harvard University, Universität Basel, Harvard-Smithsonian Center for Astrophysics
Journal
Scientific Reports
Band
5
Anzahl der Seiten
5
ISSN
2045-2322
DOI
https://doi.org/10.1038/srep08119
Publikationsdatum
01-2015
Peer-reviewed
Ja
ÖFOS 2012
103025 Quantenmechanik, 103004 Astrophysik
Schlagwörter
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/830c1483-c23b-4bd7-b2ef-c851bcf1f4a8