Optimization of the coherence properties of diamond samples with an intermediate concentration of NV centers

The sensitivity of the nitrogen-vacancy (NV) color centers in diamond-based magnetometers strongly depends on the number of NV centers involved in the measurement. Unfortunately, an increasing concentration of NV centers leads to decreases of their dephasing and coherence time if the nitrogen conten...

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Published inarXiv.org
Main Authors Rubinas, O R, Soshenko, V V, Bolshedvorskii, S V, Zeleneev, A I, Galkin, A S, Tarelkin, S A, Troschiev, S Y, Vorobyov, V V, Sorokin, V N, Sukhanov, A A, Vins, V G, Smolyaninov, A N, Akimov, A V
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.04.2020
Subjects
Carbon content
Coherence
Color centers
Diamonds
Optimization
Physics - Applied Physics
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Summary:The sensitivity of the nitrogen-vacancy (NV) color centers in diamond-based magnetometers strongly depends on the number of NV centers involved in the measurement. Unfortunately, an increasing concentration of NV centers leads to decreases of their dephasing and coherence time if the nitrogen content exceeds a certain threshold level (approximately \({10^{17}}{\rm{ c}}{{\rm{m}}^{ - 3}}\)). Here, we demonstrate that this increased dephasing can be efficiently compensated by postprocessing procedures in the vicinity of the threshold concertation, thus extending possible useful concentrations on NV centers with the maximum possible decoherence time in diamonds with a natural carbon content.
ISSN:2331-8422
DOI:10.48550/arxiv.2004.10646