Collecting single photons from a cavity-coupled quantum dot using an adiabatic tapered fiber
Abstract
We demonstrate efficient in-plane optical fiber collection of single photon emission from quantum dots embedded in photonic crystal cavities. This was achieved via adiabatic coupling between a tapered optical fiber and a tapered on-chip photonic waveguide coupled to the photonic crystal cavity. The collection efficiency of a dot in a photonic crystal cavity was measured to be 5 times greater via the tapered optical fiber compared to collection by a microscope objective lens above the cavity. The single photon source was also characterized by second order photon correlations measurements giving g(2)(0)=0.17 under non-resonant excitation. Numerical calculations demonstrate that the collection efficiency could be further increased by improving the dot-cavity coupling and by increasing the overlap length of the tapered fiber with the on-chip waveguide. An adiabatic coupling of near unity is predicted for an overlap length of 5 microns.
Keywords
Cite
@article{arxiv.2410.09832,
title = {Collecting single photons from a cavity-coupled quantum dot using an adiabatic tapered fiber},
author = {Anatole Bach and Antoine Chapuis and Corentin Morin and Richard Hostein and Savvas Germanis and Benoit Eble and Mathieu Bernard and Florent Margaillan and Paola Atkinson and Valia Voliotis and Remy Braive and Kimon Moratis},
journal= {arXiv preprint arXiv:2410.09832},
year = {2024}
}
Comments
22 pages, 12 figures