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

TL;DR

This paper demonstrates that single quantum dots can efficiently emit fluorescence photons into the guided modes of an optical nanofiber, achieving a maximum efficiency of 22%, which could advance quantum information applications.

Contribution

The study provides the first experimental measurement of quantum dot fluorescence channeling efficiency into nanofiber guided modes, reaching over 20% at optimal fiber diameter.

Findings

Maximum channeling efficiency of 22% at 350 nm fiber diameter

Simultaneous measurement of guided and radiation modes

Potential for improved single-photon sources in quantum tech

Abstract

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.