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 (~30nm), and are independently tunable with device geometry, across the excitation (~530nm) and emission (~600-800nm) 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.
@article{arxiv.1101.4574,
title = {Plasmonic resonators for enhanced diamond NV- center single photon sources},
author = {Irfan Bulu and Thomas Babinec and Birgit Hausmann and Jennifer T. Choy and Marko Loncar},
journal= {arXiv preprint arXiv:1101.4574},
year = {2015}
}