Color center fluorescence and spin manipulation in single crystal, pyramidal diamond tips
Richard Nelz, Philipp Fuchs, Oliver Opaluch, Selda Sonusen, Natalia, Savenko, Vitali Podgursky, and Elke Neu
TL;DR
This study explores the fluorescence and spin control of nitrogen and silicon-vacancy centers in pyramidal diamond tips, highlighting their potential for enhanced sensing applications.
Contribution
It demonstrates coherent spin manipulation and analyzes fluorescence properties in pyramidal diamond tips, providing insights for quantum sensing enhancements.
Findings
NV spin coherence time of 7.7 microseconds
Enhanced photon emission near pyramid apex
Effective refractive index effects on fluorescence
Abstract
We investigate bright fluorescence of nitrogen (NV)- and silicon-vacancy color centers in pyramidal, single crystal diamond tips which are commercially available as atomic force microscope probes. We coherently manipulate NV electronic spin ensembles with s. Color center lifetimes in different tip heights indicate effective refractive index effects and quenching. Using numerical simulations, we verify enhanced photon rates from emitters close to the pyramid apex; a situation promising for scanning probe sensing.
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