Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.70: Poster
Wednesday, March 20, 2013, 16:00–18:30, Empore Lichthof
Single Photon Source with a Diamond Nanocrystal and an Optical Nanofiber — •Lars Liebermeister1, Fabian Petersen1, Daniel Burchardt1, Juliane Hermelbracht1, Toshiyuki Tashima1,2, Markus Weber1, Ariane Stiebeiner3, Arno Rauschenbeutel3, and Harald Weinfurter1,2 — 1Ludwig-Maximilians-Universität, München — 2Max-Planck-Institut für Quantenoptik, Garching — 3Technische Universität Wien - Atominstitut, Wien, Austria
The development of high yield single photon sources is crucial for applications in quantum information as well as for experiments on the foundations of quantum physics. The NV-center in diamond is a promising solid state candidate. By using nanodiamonds this emitter can easily be coupled to integrated nano-optical and plasmonic [1] structures. Our approach is to utilize efficient coupling of fluorescence of a single NV-center to the evanescent field of an optical nanofiber [2].
Using a dip-pen technique we deposited few diamond nanorystals in the evanescent field of a nanofiber. When optically excited we observe fluorescence of few NV-centers (hosted in a single crystal) into the guided mode of the fiber. The measured antibunching of the photon statistics indicates its non-classical character. As no clean single photon emission into the fiber has been observed so far, we have set-up a new hybrid microscope (confocal microscope combined with an AFM) which allows us to optically preselect and position single nano-crystals onto the nanofiber. We report on the current experimental progress.
[1] PRL 106, 096801 (2011) [2] PRA 72(3), 032509 (2005)