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Phys Rev Lett. 2012 Aug 10;109(6):063602. Epub 2012 Aug 8.

Efficient channeling of fluorescence photons from single quantum dots into guided modes of optical nanofiber.

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Center for Photonic Innovations, University of Electro-Communications, Chofu, Tokyo, Japan.


We experimentally demonstrate the efficient channeling of fluorescence photons from single q dots on optical nanofiber into the guided modes by measuring the photon-count rates through the guided and radiation modes simultaneously. We obtain the maximum channeling efficiency to be 22.0(±4.8)% at a fiber diameter of 350 nm for the emission wavelength of 780 nm. The results may open new possibilities in quantum information technologies for generating single photons into single-mode optical fibers.

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