Nanoscopic charge fluctuations in a gallium phosphide waveguide measured by single molecules

Abstract

We present efficient coupling of single organic molecules to a gallium phosphide subwavelength waveguide (nanoguide). By examining and correlating the temporal dynamics of various single-molecule resonances at different locations along the nanoguide, we reveal light-induced fluctuations of their Stark shifts. Our observations are consistent with the predictions of a simple model based on the optical activation of a small number of charges in the GaP nanostructure.

5 pages, 5 figures

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• Integrated Photonic Quantum Technologies
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