1 Department of Physics, Technical University of Denmark2 Quantum Physics and Information Techology, Department of Physics, Technical University of Denmark3 Department of Photonics Engineering, Technical University of Denmark4 Technical University of Denmark
In the pursuit of realizing quantum optical networks, a large variety of different approaches have been studied to achieve a single photon source on-demand. The common goal for these approaches is to harvest all the emission from a quantum emitter into a single spatial optical mode while maintaining a high signal-to-noise ratio. In this work, we use a single nitrogen vacancy center in diamond as a quantum emitter operating at ambient conditions and we demonstrate an increased photon count rate up to a factor of 1.76 by placing a silver mirror fabricated on the end facet of an optical fiber near the emitter.
Journal of Optics, 2014, Vol 16, Issue 11
NV center; Diamond; Mirror; Collection rate; Single photon source