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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum Optics II
Q 19.1a: Talk
Tuesday, March 10, 2020, 14:15–14:30, f342
Master equation for multilevel interference in a superradiant medium — •Aleksei Konovalov, Andreas Buchheit, and Giovanna Morigi — Universität des Saarlandes, Saarbrücken, Germany
We derive a master equation for a superradiant medium which includes multilevel interference between the individual scatterers. The derivation relies on the Born-Markov approximation and implements the coarse graining formalism. The master equation fulfils the Lindblad form, the dynamics it predicts shows that the scattering properties are affected by the interplay between single-atom multilevel interference, multi-atom interference between identical transitions, and multi-atom interference between different electronic transitions with parallel dipoles. This formalism is then applied to determine the excitation spectrum of two atoms using the parameters of the Hydrogen transitions 2S1/2→4P1/2 and 2S1/2→4P3/2. The distortion of the signal due to the interplay of multilevel and multi-atom interference is discussed as a function of the interatomic distance. These results are relevant for the realization of atomic clocks using cold atomic ensembles.