Tim Schroeder, Masazumi Fujiwara, Tetsuya Noda, Hong-Quan Zhao, Oliver Benson, and Shigeki Takeuchi (2012)
A nanodiamond-tapered fiber system with high single-mode coupling efficiency
Optics Express, 20(10):10490-10497.
We present a fiber-coupled diamond-based single photon system. Single nanodiamonds containing nitrogen vacancy defect centers are deposited on a tapered fiber of 273 nanometer in diameter providing a record-high number of 689,000 single photons per second from a defect center in a single-mode fiber. The system can be cooled to cryogenic temperatures and coupled evanescently to other nanophotonic structures, such as microresonators. The system is suitable for integrated quantum transmission experiments, two-photon interference, quantum-random-number generation and nano-magnetometry.