Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 87: Carbon: Diamond and others
HL 87.2: Vortrag
Freitag, 24. März 2017, 09:45–10:00, POT 06
Precision measurements of electric fields using NV centers in diamond — •Julia Michl1, Philipp Neumann1, Andrej Denisenko1, Junichi Isoya2, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart, Germany — 2Research Center for Knowledge Communities, University of Tsukuba, Japan
As a quantum sensor, the nitrogen vacancy center in diamond can be used most prominently for magnetometry but also for thermometry, piezometry and electrometry.
Whereas the usage of single NV centers can lead to exciting applications for spatial resolution in field imaging, the measurement of an NV ensemble allows for precision measurements. In this fashion, a sensitivity for magnetic fields of under 1 pT/Hz1/2 was shown to be possible with an NV ensemble[1].
Here, we show the combination of the precision measurement on NV ensembles with measurement techniques for electrometry already reported for single NVs[2].
Even though the coupling of the NV center electron spin in its ground state to electric fields is comparatively small, the high precision which can be achieved due to the long coherence times of the NV centers even at room temperature raise the prospect of its application as a quantum based electrometer.
[1] T. Wolf et al., PRX, 2015 [2] M. Doherty, NJP, 2014