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Q: Fachverband Quantenoptik und Photonik

Q 18: Quantum Optics: Cavity and Waveguide QED I

Q 18.1: Invited Talk

Tuesday, March 7, 2023, 11:00–11:30, E214

Atoms coupled to nanofibers: from topological phases to correlated photon emission — •Beatriz Olmos — Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany — The University of Nottingham, Nottingham, NG7 2RD, United Kingdom

An ensemble of emitters coupled to a common environment displays collective behaviour. This includes the enhanced and inhibited emission of photons from the ensemble (so-called super and subradiance, respectively), and the emergence of induced dipole-dipole interactions among the emitters. Among these structures, so-called nanophotonic waveguides such as single mode optical nanofibers particularly stand out, since the translationally invariant nature of the nanofiber-guided modes gives rise to infinitely ranged couplings between the emitters. In this talk, I will summarize some of the latest theoretical results in my group, where we have shown how these all-to-all interactions can facilitate the study of non-trivial topology, the emergence of phase transitions, and correlated photon emission, among other phenomena.