Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 71: Nano-Optics
Q 71.8: Talk
Friday, March 15, 2024, 16:15–16:30, HS 3219
High-resolution cryogenic spectroscopy of single organic molecules in printed nanocrystals — •Mohammad Musavinezhad1,3, Jan Renger1, Johannes Zirkelbach1, Tobias Utikal1, Claudio U. Hail2, Dimos Poulikakos2, Stephan Götzinger1,3, and Vahid Sandoghdar1,3 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2ETH, Zürich, Switzerland — 3FAU Erlangen-Nuremberg, Erlangen, Germany.
Organic dye molecules have shown promising functionalities in quantum photonic devices, but deterministic control of the molecules’ position and density remains a challenge. Here, we extend our previous efforts on printing organic nanocrystals (NCs) [1] to the new system of dibenzoterrylene (DBT) in anthracene (Ac). We examined the zero-phonon transitions of individual DBT molecules in printed Ac NCs at 2 K. By using high-resolution fluorescence excitation spectroscopy, we confirm that single-molecule transitions in printed NCs are nearly as narrow as their lifetime-limited counterparts in bulk Ac. Moreover, we show that resonance instabilities are typically less than one linewidth. We characterize the orientation and lateral coordinates of individual molecules in a large number of NCs to assess the degree of crystallinity and the lateral dimensions of the printed structures [2]. The combination of the emitters’ subwavelength placement precision enabled by our nanoprinting method and their spectral quality makes them attractive candidates for integration into quantum optical circuits.
[1] Hail, C. U. et al., Nat Commun 10, 1880 (2019).
[2] Musavinezhad, M. et al., submitted.
Keywords: nanocrystals; organic molecules; nanoprinting; quantum emitters; single-molecule spectroscopy