Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 71: Nano-Optics
Q 71.6: Vortrag
Freitag, 15. März 2024, 15:45–16:00, HS 3219
On-chip interference of scattering from two individual molecules — •Alexey Shkarin1, Dominik Rattenbacher1, Jan Renger1, Tobias Utikal1, Stephan Götzinger1,2, and Vahid Sandoghdar1,2 — 1Max Planck Institute for the Science of Light, D-91058 Erlangen, Germany — 2Department of Physics, Friedrich Alexander University Erlangen-Nuremberg, D-91058 Erlangen, Germany
Scaling up quantum optical networks entail interconnecting ever larger number of remote quantum emitters through optical means. The most technologically-compatible way of doing this involves coupling multiple emitters to photonic chip structures prepared according to the experimental requirements. Such efforts are frequently stymied by low coupling efficiency of emitters to photonic structures, which is often overcome through resonant enhancement. In our work, we employ on-chip disk resonators evanescently coupled to multiple dibenzoterrylene molecules serving as optically active quantum two-level system. To preserve the quality factor of the resonators, we use polyethylene (PE) as a host material for molecules. Somewhat surprisingly, despite disordered nature of PE we find that a large fraction of molecules preserve their excellent optical properties, including lifetime-limited linewidths. Thanks to the high resonator finesse, we observe Purcell enhancement of almost an order of magnitude in the emission and strong molecule-induced extinction of the resonator mode. Finally, we simultaneously couple two molecules at the same frequency and observe significant suppression of backwards scattering compared to a single emitter.
Keywords: quantum emitter; single molecule; disk resonator; multi-emitter