Tapered fiber coupling of single photons emitted by a deterministically positioned single nitrogen vacancy center
- Fakultät für Physik, Ludwig-Maximilians-Universität München, 80799 München (Germany)
- Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin (Germany)
- Institut für Organische Chemie, Universität Würzburg, 97074 Würzburg (Germany)
- Atominstitut, Technische Universität Wien, 1020 Wien (Austria)
A diamond nano-crystal hosting a single nitrogen vacancy (NV) center is optically selected with a confocal scanning microscope and positioned deterministically onto the subwavelength-diameter waist of a tapered optical fiber (TOF) with the help of an atomic force microscope. Based on this nano-manipulation technique, we experimentally demonstrate the evanescent coupling of single fluorescence photons emitted by a single NV-center to the guided mode of the TOF. By comparing photon count rates of the fiber-guided and the free-space modes and with the help of numerical finite-difference time domain simulations, we determine a lower and upper bound for the coupling efficiency of (9.5 ± 0.6)% and (10.4 ± 0.7)%, respectively. Our results are a promising starting point for future integration of single photon sources into photonic quantum networks and applications in quantum information science.
- OSTI ID:
- 22280614
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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