Efficient coupling of single photons to ridge-waveguide photonic integrated circuits.

Autor: Fattah poor, S., Hoang, T. B., Midolo, L., Dietrich, C. P., Li, L. H., Linfield, E. H., Schouwenberg, J. F. P., Xia, T., Pagliano, F. M., van Otten, F. W. M., Fiore, A.
Předmět:
Zdroj: Applied Physics Letters; 4/1/2013, Vol. 102 Issue 13, p131105-131105-5, 1p, 1 Black and White Photograph, 1 Diagram, 3 Graphs
Abstrakt: We demonstrate the efficient coupling of single photons emitted by single quantum dots (QDs) in a photonic crystal cavity (PhCC) to a ridge waveguide (RWG). Using a single-step lithographic process with an optimized tapering, up to 70% coupling efficiency between the photonic crystal waveguide and the RWG was achieved. The emission enhancement of single QDs inside an in-line PhCC coupled via the RWG to a single-mode fiber was observed. Single-photon funneling rates around 3.5 MHz from a single QD into the RWG were obtained. This result is a step toward the realization of a fully functional quantum photonic integrated circuit. [ABSTRACT FROM AUTHOR]
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