Coherent characterisation of a single molecule in a photonic black box

Sebastien Boissier, Ross C. Schofield, Lin Jin, Anna Ovvyan, Salahuddin Nur, Frank H. L. Koppens, Costanza Toninelli, Wolfram H. P. Pernice, Kyle D. Major, E. A. Hinds and Alex S. Clark ()
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Sebastien Boissier: Imperial College London
Ross C. Schofield: Imperial College London
Lin Jin: Universität Münster
Anna Ovvyan: Universität Münster
Salahuddin Nur: Imperial College London
Frank H. L. Koppens: ICFO—Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
Costanza Toninelli: LENS and CNR-INO
Wolfram H. P. Pernice: Universität Münster
Kyle D. Major: Imperial College London
E. A. Hinds: Imperial College London
Alex S. Clark: Imperial College London

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Extinction spectroscopy is a powerful tool for demonstrating the coupling of a single quantum emitter to a photonic structure. However, it can be challenging in all but the simplest of geometries to deduce an accurate value of the coupling efficiency from the measured spectrum. Here we develop a theoretical framework to deduce the coupling efficiency from the measured transmission and reflection spectra without precise knowledge of the photonic environment. We then consider the case of a waveguide interrupted by a transverse cut in which an emitter is placed. We apply that theory to a silicon nitride waveguide interrupted by a gap filled with anthracene that is doped with dibenzoterrylene molecules. We describe the fabrication of these devices, and experimentally characterise the waveguide coupling of a single molecule in the gap.

Date: 2021
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DOI: 10.1038/s41467-021-20915-z

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