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Nano Lett. 2008 Nov;8(11):3911-5. doi: 10.1021/nl8023627. Epub 2008 Sep 24.

One-by-one coupling of single defect centers in nanodiamonds to high-Q modes of an optical microresonator.

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  • 1Nano-Optik, Institut für Physik, Humboldt-Universität zu Berlin, Hausvogteiplatz 5-7, 10117 Berlin, Germany.

Abstract

In this letter, we present the on-demand coupling of single NV(-) defect centers in nanodiamonds to a polystyrene microspherical resonator. From an ensemble on a coverslip, we select single nanodiamonds containing a single defect proven by a pronounced antibunching dip. With the help of a scanning near-field probe, we can attach these nanodiamonds to a microsphere resonator one-by-one. A clearly modulated fluorescence spectrum demonstrates coupling of the single defect centers to high-Q whispering-gallery modes. Our experiments establish a toolbox to assemble complex systems consisting of single quantum emitters and (coupled) microresonators.

PMID:
18811213
[PubMed]
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