Color center fluorescence and spin manipulation in single crystal, pyramidal diamond tips

We investigate bright fluorescence of nitrogen (NV)- and silicon-vacancycolor centers in pyramidal,single crystaldiamond tips, which are commercially available as atomic force microscope probes. We coherently manipulate NV electronic spin ensembles withT2 = 7.7(3) μs.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 thepyramid apex rendering them promising as scanning probesensors.

Source: Applied Physics Letters - November 7, 2016 Category: Physics Authors: Richard Nelz, Philipp Fuchs, Oliver Opaluch, Selda Sonusen, Natalia Savenko, Vitali Podgursky and Elke Neu Source Type: research