Efficient channeling of fluorescence photons from single quantum dots   into guided modes of optical nanofiber
  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 (\pm4.8)% at 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. 
Ramachandrarao Yalla, Fam Le Kien, M. Morinaga, and K. Hakuta
quant-ph physics.optics