We demonstrated a simple and reliable technique of coupling diamond nanocrystal containing NV center to tapered optical fiber. We carefully studied fluorescence of the fiber itself and were able to suppress it to the level lower than single photon emission from the NV center. Single photon statistics was demonstrated at the fiber end as well as up to 3 times improvement in collection efficiency with respect to our confocal microscope
@article{arxiv.1608.02862,
title = {Coupling of single NV Center to adiabatically tapered optical single mode fiber},
author = {Vadim V. Vorobyov and Vladimir V. Soshenko and Stepan V. Bolshedvorskii and Javid Javadzade and Nikolay Lebedev and Andrey N. Smolyaninov and Vadim N. Sorokin and Alexey V. Akimov},
journal= {arXiv preprint arXiv:1608.02862},
year = {2017}
}