SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 5: Quantum Optics: Open Quantum Systems
Q 5.1: Vortrag
Montag, 6. März 2023, 11:00–11:15, F342
Certifying multi-mode light-matter interactions in lossy resonators — •Dominik Lentrodt1,2, Oliver Diekmann2, Christoph H. Keitel2, Stefan Rotter3, and Jörg Evers2 — 1Physikalisches 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 generalisations - have been an indispensable tool in studying the quantum dynamics of light-matter interactions in optical resonators. Recently, however, 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, we will discuss recent extensions of Jaynes-Cummings type few-mode models and an associated class of loss-induced multi-mode effects. In particular, we will introduce an exact basis transformation to derive few-mode theory from first principles and a simple classification criterion for the appearance of multi-mode effects in lossy resonators. We will further discuss open problems, the relation to alternative approaches, and implications for recent experiments in x-ray cavity QED with Mössbauer nuclei — an emerging platform at the high-energy frontier of quantum optics, featuring lossy resonators doped with ultra-low decoherence emitters.