Freiburg 2019 – wissenschaftliches Programm
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FM: Fall Meeting
FM 17: Quantum Computation: Simulation I
FM 17.1: Talk
Montag, 23. September 2019, 16:30–16:45, 1010
Quantum Simulation of the Quantum Rabi Model in the Deep Strong Coupling Regime — •Johannes Koch1, Geram Hunanyan1, Simone Felicetti2, Enrique Rico3,4, Enrique Solano3,4, and Martin Weitz1 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, 53115 Bonn, Germany — 2Laboratoire Matériaux et Phénomènes Quantiques, Universite of Paris 7, Bâtiment Condorcet, Case courrier 7021, 75205 Paris Cedex 13, 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
The Quantum Rabi Model describing the interaction between a two-level quantum system and a single bosonic mode has been well studied in the moderate and strong coupling regimes, while the experimental study of more extreme parameter regimes has long been a technical challenge. Here we investigate the Quantum Rabi Model in the deep strong coupling regime, in which the characteristic frequencies of the coupling exceeds those of the two-level system and the bosonic mode.
Our experimental implementation uses ultracold rubidium atoms in a tailored optical lattice potential, with the two-level system provided by two Bloch bands. This effective qubit interacts with a quantum harmonic oscillator mode provided by the atomic motion in an optical dipole potential superimposed to the lattice potential. The time evolution of the system provides insights into the evolution of the Quantum Rabi Model. The present status of the experiment will be presented.