Speaker: 
Claudiu Genes - MPL Erlangen

Title: 
Quantum optics with molecules

Abstract:
Cavity quantum electrodynamics concepts, such as the vacuum Rabi splitting, occurrence of polaritons, strong coupling or the Purcell effect, are well understood and analytically tackled for simple models of quantum emitters involving solely electronic levels. Ensembles of molecular quantum emitters instead, are inherently complex as they are necessarily strongly affected by frequency and orientational disorder, as well as by vibronic effects such electron-vibron scattering and vibrational relaxation. We describe analytical models, based on mesoscopic averaging, where energy disorder is shown to couple bright polaritonic states to dark state manifolds in a dissipative, unidirectional way. Moreover, the competition between near field couplings, vibronic interactions and vibrational relaxation leads to an incoherent migration of excitations leading to the deterioration of macroscopic quantum superpositions.

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QuCoLiMa Talks are the weekly seminar of the collaborative research center TRR 306 QuCoLiMa (Quantum Cooperativity of Light and Matter). The talks are given by (external) experts, whose research falls within the scope of QuCoLiMa.

More information at www.qucolima.de/talks