Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 49: Poster – Photonics, Lasers, and Applications
Q 49.13: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Towards coherent dipole-dipole coupling: cryogenic single molecule spectroscopy of DBATT dimers — •Tim Hebenstreit1,2, Siwei Luo1,2, Michael Becker1, Alexey Shkarin1, Aleksandr Oshchepkov3, Konstantin Amsharov3, Jan Renger1, Tobias Utikal1, Vahid Sandoghdar1,2, and Stephan Götzinger1,2 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Department of Physics, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany — 3Department of Chemistry, Martin-Luther-University Halle-Wittenberg, Halle, Germany
Coherently coupled molecules are an interesting resource for quantum optics and quantum information processing, providing access to sub- and superradiant states. Such pairs of molecules have previously been found by tedious search routines, since molecules are randomly doped into the host matrix at low concentrations. To address this issue, our approach is to use a newly developed chemical synthesis method that can connect two emitters with a linker that is less than 2 nm in length. Here, we present cryogenic single molecule spectroscopy studies on 2,3,8,9- dibenzanthanthrene (DBATT) dimers. By embedding these dimers in shock-frozen tetradecane matrices, we demonstrate lifetime-limited linewidths of DBATT dimers that also exhibit similar fluorescence spectra as isolated DBATT molecules. Our results are a first step towards a routine investigation of cooperative phenomena using molecular dimers.
Keywords: coherent dipole-dipole coupling; single molecule spectroscopy; localization microscopy; molecular dimer; single-photon source