My work focuses on developing a method (nanoprinting) that allows for the scalable integration of organic molecules into nanophotonic structures. The main goal is the efficient coupling of organic dyes via photonic channels on a chip.
Quantum Efficiency of Single Dibenzoterrylene Molecules in p-Dichlorobenzene at Cryogenic Temperatures
Mohammad Musavinezhad,
Alexey Shkarin,
Dominik Rattenbacher,
Jan Renger,
Tobias Utikal,
Stephan Götzinger,
Vahid Sandoghdar
The Journal of Physical Chemistry B
5353-5359
(2023)
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We measure the quantum efficiency (QE) of individual dibenzoterrylene (DBT) molecules embedded in p-dichlorobenzene at cryogenic temperatures. To achieve this, we combine two distinct methods based on the maximal photon emission and on the power required to saturate the zero-phonon line to compensate for uncertainties in some key system parameters. We find that the outcomes of the two approaches are in good agreement for reasonable values of the parameters involved, reporting a large fraction of molecules with QE values above 50%, with some exceeding 70%. Furthermore, we observe no correlation between the observed lower bound on the QE and the lifetime of the molecule, suggesting that most of the molecules have a QE exceeding the established lower bound. This confirms the suitability of DBT for quantum optics experiments. In light of previous reports of low QE values at ambient conditions, our results hint at the possibility of a strong temperature dependence of the QE.
Master of Science 2021 Department of Physics FAU Erlangen-Nürenberg, Erlangen, Germany.
Bachelor of Science 2018 Department of Electrical Engineering and Physics Sharif University of Technology, Tehran, Iran.
Max-Planck-Zentren und -Schulen
Datenerfassung
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