Stability of Near-Surface Nitrogen Vacancy Centers Using Dielectric Surface Passivation
Ravi Kumar,
Saksham Mahajan,
Felix Donaldson
et al.
Abstract:We study the photophysical
stability of ensemble near-surface
nitrogen
vacancy (NV) centers in diamond under vacuum and air. The optically
detected magnetic resonance contrast of the NV centers was measured
following exposure to laser illumination, showing opposing trends
in air compared to vacuum (increasing by up to 9% and dropping by
up to 25%, respectively). Characterization using X-ray photoelectron
spectroscopy (XPS) suggests a surface reconstruction: In air, atmospheric
oxygen adsorption on a surface le… Show more
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