Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 54: Nano-Optics (Single Quantum Emitters and Plasmonics)

Q 54.4: Talk

Thursday, March 8, 2018, 11:15–11:30, K 0.023

Coherent interaction of light with a single molecule near a plasmonic nano-antenna — •Johannes Zirkelbach, Tobias Utikal, Stephan Götzinger, and Vahid Sandoghdar — Max Planck Institut für die Physik des Lichts, 91058 Erlangen, Deutschland

At cryogenic temperatures, single molecules in organic matrices are efficient quantum emitters. Using dedicated nanofabrication and combination of high-resolution spectroscopy with localization microscopy, we observed the radiative enhancement of the fluorescence of a single molecule in the vicinity of a plasmonic nanostructure. We demonstrate the modification of the molecule’s excited state lifetime through Hanbury-Brown and Twiss measurements. Direct extinction measurements in reflection and transmission allow us to explore the change of linewidth in the zero-phonon-line and the coherent interaction among the incident laser beam, the molecular emission and the scattering from the gold nanostructure. We discuss the effect of spectral diffusion and dephasing for future experiments.