SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 45: Photonics III
Q 45.3: Vortrag
Donnerstag, 9. März 2023, 11:30–11:45, A320
Optical Ramsey Spectroscopy on a Single Organic Molecule — •Yijun Wang1, Vladislav Bushmakin2, Guilherme Stein2, Andreas Schell1,3, and Ilja Gerhardt1 — 1Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, D-30167 Hannover, Germany — 23. Physikalisches Institut, Universität Stuttgart and Stuttgart Research Center of Photonic Engineering (SCoPE), Pfaffenwaldring 57, D-70569 Stuttgart, Germany — 3Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig, Germany
Single molecules are important players in quantum optics. Their coherence is of uttermost importance, since it influences the usage in quantum information processing, such as in quantum networking applications. We implement a pump-probe experiment in a Ramsey-type pulse sequence on a single 2.3,8.9-dibenzanthanthrene (DBATT) molecule to measure the optical coherence time and compare it with conventional methods [1]. The molecule is selected microscopically and spectroscopically at T=1.4 K. We also perform frequency-detuned excitation, gaining richer insights into the dephasing behavior of the molecule. The experiments exhibit that optical Ramsey spectroscopy is a promising tool for measuring the emitter’s coherence properties.
[1] – Y. Wang, V. Bushmakin, G. Stein, A. Schell, and I. Gerhardt, Optical Ramsey spectroscopy on a single molecule, Optica 9, 374-378 (2022).