Quantum Efficiency of Single Dibenzoterrylene Molecules in p-Dichlorobenzene at Cryogenic Temperatures

Musavinezhad M, Shkarin A, Rattenbacher D, Renger J, Utikal T, Götzinger S, Sandoghdar V (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Journal of Physical Chemistry B American Chemical Society

Book Volume: 127

Pages Range: 5353-5359

Journal Issue: 23

DOI: 10.1021/acs.jpcb.3c01755

Abstract

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.

Authors with CRIS profile

Stephan Götzinger Professur für Physik Vahid Sandoghdar Lehrstuhl für Experimentalphysik

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Related research project(s)

One-dimensional photon-mediated cooperativity of quantum emitters (C01) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Musavinezhad, M., Shkarin, A., Rattenbacher, D., Renger, J., Utikal, T., Götzinger, S., & Sandoghdar, V. (2023). Quantum Efficiency of Single Dibenzoterrylene Molecules in p-Dichlorobenzene at Cryogenic Temperatures. Journal of Physical Chemistry B, 127(23), 5353-5359. https://dx.doi.org/10.1021/acs.jpcb.3c01755

MLA:

Musavinezhad, Mohammad, et al. "Quantum Efficiency of Single Dibenzoterrylene Molecules in p-Dichlorobenzene at Cryogenic Temperatures." Journal of Physical Chemistry B 127.23 (2023): 5353-5359.

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