SAMOP 2021 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 2: Nano-Optics and Optomechanics
Q 2.12: Poster
Montag, 20. September 2021, 16:30–18:30, P
Single-Molecule Quantum Optics on a Chip — •Dominik Rattenbacher1, Alexey Shkarin1, Jan Renger1, Tobias Utikal1, Stephan Götzinger2,1, and Vahid Sandoghdar1,2 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Friedrich Alexander University, Erlangen, Germany
One-dimensional subwavelength waveguides (nanoguides) are very promising candidates for exploring the rich physics of quantum many body systems. However, the efficiency of coupling between an individual emitter, e.g., an organic dye molecule and a realistic nanoguide is limited by geometric and material constrains and a rich internal level structure of the emitters. To address these issues, we employed TiO2 nanoguide racetrack resonators and demonstrated a sevenfold Purcell enhancement of the molecule’s zero-phonon line emission into the nanoguide mode [1]. Additionally, we explored the use of gallium phosphide (GaP) as a high refractive index nanoguide material. Here, we could observe up to 15% extinction for linear nanoguides, twice higher than for TiO2 [2]. We also show how studies on the spatio-temporal behavior of several molecules reveal nanoscopic charge fluctuations in GaP. Finally, we discuss our plans for improving the quality factor of our microresonators and for implementing individual control on the molecule frequencies to achieve long-distance photonic coupling of several molecules [3].
[1] D. Rattenbacher et al., New J. Phys. 21, 062002 (2019)
[2] A. Shkarin et al., Phys. Rev. Lett. 126, 133602 (2021)
[3] H. R. Haakh et al., Phys. Rev. A 94, 053840 (2016)