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Opt Express. 2011 Mar 14;19(6):5268-76. doi: 10.1364/OE.19.005268.

Plasmonic resonators for enhanced diamond NV-center single photon sources.

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1
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 USA. irfan@seas.harvard.edu

Abstract

We propose a novel source of non-classical light consisting of plasmonic aperture with single-crystal diamond containing a single Nitrogen-Vacancy (NV) color center. Theoretical calculations of optimal structures show that these devices can simultaneously enhance optical pumping by a factor of 7, spontaneous emission rates by Fp~50 (Purcell factor), and offer collection efficiencies up to 40%. These excitation and collection enhancements occur over a broad range of wavelengths (~30 nm), and are independently tunable with device geometry, across the excitation (~530 nm) and emission (~600-800 nm) spectrum of the NV center. Implementing this system with top-down techniques in bulk diamond crystals will provide a scalable architecture for a myriad of diamond NV center applications.

PMID:
21445163
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