SAMOP 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
A: Fachverband Atomphysik
A 14: Ultra-cold Atoms, Ions and BEC II (joint session A/Q)
A 14.1: Hauptvortrag
Mittwoch, 8. März 2023, 11:00–11:30, F303
Realization of the Periodic Quantum Rabi Model in the Deep Strong Coupling Regime with Ultracold Rubidium Atoms — •Stefanie Moll1, Geram Hunanyan1, Johannes Koch1, Enrique Rico2,3, Enrique Solano2,3, and Martin Weitz1 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, 53115 Bonn, Germany — 2Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain — 3IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
At moderate coupling strengths, the interaction of light and matter is well described in terms of the Jaynes-Cummings model. However, when the coupling strength approaches the optical resonance frequency, the system enters the deep strong coupling regime, where the full quantum Rabi Hamiltonian applies, leading to non-intuitive dynamics.
In our experiment we realize the quantum Rabi model using ultracold Rubidium atoms in an optical lattice potential, creating an effective two-level system, here encoded in different Bloch bands. The bosonic mode is represented by the oscillation of atoms in a superimposed optical dipole trapping potential.
We observe atomic dynamics in the deep strong coupling regime with the cold atoms system. At long interaction times we observe collapse and revival of the initial state, as can be described within the so-called periodic quantum Rabi model.