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Opt Express. 2012 May 7;20(10):10490-7. doi: 10.1364/OE.20.010490.

A nanodiamond-tapered fiber system with high single-mode coupling efficiency.

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  • 1Institute of Physics, AG Nano-Optik, Humboldt-Universitt zu Berlin, Berlin, Germany. tim.schroeder@physik.hu-berlin.de


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.

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