Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 10: Cavity QED

Q 10.1: Invited Talk

Monday, March 11, 2024, 17:00–17:30, HS 1199

Correlated light-matter states from first principles and their use for chirality, and chemistry — •Christian Schäfer — Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.

Confining optical or plasmonic modes results in a strong increase in light-matter coupling and leads to the creation of hybrid light-matter states, called polaritons. Control over the electromagnetic confinement allows, therefore, to non-intrusively control the correlated eigenstates. Here, we focus on two fascinating applications that emerge from this realization. First, breaking chiral symmetry with specifically designed electromagnetic environments paves the way for a new direction in chiral recognition [1,2]. Second, we refine our theoretical tool-box and investigate how vibrational strong coupling can control chemical reactivity [3-7]. We conclude with an outlook on active research addressing plasmonic catalysis and the quantization and treatment of macroscopic open quantum-systems.

[1] C. Schäfer, D. Baranov, J. Phys. Chem. Lett. 2023, 14, 15, 3777-3784. [2] D. Baranov, C. Schäfer, M. Gorkunov, ACS Photonics 2023, 10, 8, 2440-2455. [3] C. Schäfer, Phys. Chem. Lett. 2022, 13, 30, 6905-6911. [4] C. Schäfer, F. Buchholz, M. Penz, M. Ruggenthaler, and A. Rubio, PNAS 2021 Vol. 118 No. 41 e2110464118. [5] C. Schäfer, J. Flick, E. Ronca, P. Narang, and A. Rubio, Nature Communications, (2022) 13:7817. [6] C. Schäfer, J. Fojt, E. Lindgren, and P. Erhart, arXiv:2311.09739, (2023). [7] M. Castagnola, T. Haugland, E. Ronca, H. Koch, C. Schäfer, to be submitted (2023).

Keywords: Ab initio QED; Polaritonics; Chiral Polaritons; QEDFT; Machine learning