Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 50: Quantum Gases (Bosons) V
Q 50.4: Vortrag
Mittwoch, 7. März 2018, 14:45–15:00, K 2.020
Periodic Quantum Rabi Model with Ultracold Rubidium Atoms in an Optical Lattice — •Johannes Koch1, Trim Kasabaci1, Martin Leder1, Simone Felicetti2, Enrique Rico3,4, Carlos Sabin5, Enrique Solano3,4, and Martin Weitz1 — 1Institut für Angewandte Physik der Universität Bonn, Wegelerstr. 8, D-53115 Bonn, Germany — 2Laboratoire Matériaux et Phénomènes Quantiques, Sorbonne Paris Cité, Université Paris Diderot, CNRS UMR 7162, 75013, Paris, France — 3Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain — 4IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, E-48013 Bilbao, Spain — 5Instituto de Física Fundamental, CSIC, Serrano 113-bis, E-28006 Madrid, Spain
The quantum Rabi model describing the interaction between a two-level quantum system and a single bosonic mode has been thoroughly studied in the moderate and strong coupling regimes. Here we investigate the model in the deep strong coupling regime, where a pattern of collapse and revival of the initial quantum state is expected. Our experimental implementation to simulate the quantum Rabi model uses ultracold rubidium atoms in a tailored optical lattice potential, with the two-level system being represented by the occupation of Bloch bands of the lattice. This effective qubit interacts with a quantum harmonic oscillator provided by an optical dipole potential. Using atom interferometric techniques, the revival of the phase imprinted initial state is observed. The present status of the experiment will be presented.