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Department of Physics

Mode-multiplexing deep-strong light-matter coupling

Artistic impression of the deep-strong coupling achieved. Rainbow colored spirals on a microstructured surface. © Joshua Mornhinweg​/​TU Dortmund

Together with the groups of Prof. Dr. Rupert Huber and Prof. Dr. Dominique Bougeard (University of Regensburg), we were able to reach record-breaking, deep-strong light-matter coupling with a coupling strength of up to 3.19. This, for the first time, creates vacuum ground state populations exceeding 1 virtual excitation quantum.

The results have been published in Nature Communications.