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Sci Rep. 2015 May 6;5:9619. doi: 10.1038/srep09619.

Highly efficient coupling of nanolight emitters to a ultra-wide tunable nanofibre cavity.

Author information

1
1] Department of Electronic Science and Engineering, Kyoto University, Kyoto daigaku-katsura, Nishikyo-ku, Kyoto, Japan [2] Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin, Newtonstraße 15, Berlin, Germany [3] Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan [4] The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, Japan.
2
1] Department of Electronic Science and Engineering, Kyoto University, Kyoto daigaku-katsura, Nishikyo-ku, Kyoto, Japan [2] Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan [3] The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, Japan.
3
1] Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan [2] The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, Japan.
4
1] Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin, Newtonstraße 15, Berlin, Germany [2] Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan [3] The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, Japan.
5
Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin, Newtonstraße 15, Berlin, Germany.

Abstract

Solid-state microcavities combining ultra-small mode volume, wide-range resonance frequency tuning, as well as lossless coupling to a single mode fibre are integral tools for nanophotonics and quantum networks. We developed an integrated system providing all of these three indispensable properties. It consists of a nanofibre Bragg cavity (NFBC) with the mode volume of under 1 μm(3) and repeatable tuning capability over more than 20 nm at visible wavelengths. In order to demonstrate quantum light-matter interaction, we establish coupling of quantum dots to our tunable NFBC and achieve an emission enhancement by a factor of 2.7.

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