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Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 16: Quantum Effects I

Q 16.10: Talk

Tuesday, March 15, 2022, 12:45–13:00, Q-H13

Multi-mode quantum optics in lossy resonators — •Dominik Lentrodt1,2, Oliver Diekmann2, Christoph H. Keitel2, Stefan Rotter3, and Jörg Evers21Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany — 3Institute for Theoretical Physics, Vienna University of Technology (TU Wien), 1040 Vienna, Austria

Few-mode models — such as the Jaynes-Cummings model and its generalizations — have been an indispensable tool in studying the quantum dynamics of light-matter interactions in optical resonators. Recently, novel regimes featuring strong coupling in combination with large losses have attracted attention in various experimental platforms. In this context, central assumptions of these canonical quantum optical models have to be revisited. In this talk, I will discuss extensions of Jaynes-Cummings-type few-mode models and an associated class of loss-induced multi-mode effects. Besides recent theoretical progress [1-4], I will discuss implications for experiments in x-ray cavity QED with Mössbauer nuclei [5] — an emerging platform at the high-energy frontier of quantum optics, featuring lossy resonators doped with ultra-narrow emitters.

[1] Lentrodt & Evers, PRX 10, 011008 (2020), [2] Medina et al. PRL 126, 093601 (2021), [3] Lentrodt et al. arXiv:2107.11775 [quant-ph], [4] Franke et al. PRL 122, 213901 (2019), [5] Lentrodt et al. PRResearch 2, 023396 (2020)

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