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Q: Fachverband Quantenoptik und Photonik

Q 46: Nano-Optics (Single Quantum Emitters) II

Q 46.2: Vortrag

Donnerstag, 12. März 2020, 14:15–14:30, a310

Molecule-photon interactions in phononic environments — •Michael Reitz, Christian Sommer, Burak Gurlek, Diego Martin-Cano, Vahid Sandoghdar, and Claudiu Genes — Max Planck Institute for the Science of Light, Staudtstraße 2, D-91058 Erlangen, Germany

Molecular spectroscopy in the solid-state crucially depends on the interaction of electronic degrees of freedom with the surrounding environment. Processes involving absorption and emission of free space or spatially confined photons are strongly influenced by the coupling of electrons to intramolecular vibrations (vibrons) and to crystal vibrations (phonons). We describe light-matter interactions of guest molecules placed inside a host crystal environment including finite thermal occupancies of vibrons and phonons and provide analytical expressions for absorption and emission spectra derived within the formalism of quantum Langevin equations. We find that vibron-phonon couplings lead to a generally non-Markovian vibrational relaxation dynamics and that the common coupling to a continuum of bulk phonons can mediate collective vibron-vibron interactions similar to the processes of sub- and superradiance characterizing radiative transitions. On platforms showing confined optical modes we analytically derive quantities for molecular polaritonics such as the imprint of vibronic and electron-phonon coupling onto the output field and derive effective polariton cross-talk rates for finite baths occupancies.