2.2k citations · 4.1k across the 17 of their papers we have counts for
17 papers
Realization of density-dependent Peierls phases to engineer quantized gauge fields coupled to ultracold matter
Frederik Görg, Kilian Sandholzer, Joaquín Minguzzi +3
Gauge fields that appear in models of high-energy and condensed matter physics are dynamical quantum degrees of freedom due to their coupling to matter fields. Since the dynamics o…
Quantum Simulation Meets Nonequilibrium Dynamical Mean Field Theory: Exploring the Periodically Driven, Strongly Correlated Fermi-Hubbard Model
Kilian Sandholzer, Yuta Murakami, Frederik Görg +6
We perform an ab-initio comparison between nonequilibrium dynamical mean-field theory and optical lattice experiments by studying the time evolution of double occupations in the pe…
Floquet dynamics in driven Fermi-Hubbard systems
Michael Messer, Kilian Sandholzer, Frederik Görg +3
We study the dynamics and timescales of a periodically driven Fermi-Hubbard model in a three-dimensional hexagonal lattice. The evolution of the Floquet many-body state is analyzed…
Enhancement and sign change of magnetic correlations in a driven quantum many-body system
Frederik Görg, Michael Messer, Kilian Sandholzer +3
Periodic driving can be used to coherently control the properties of a many-body state and to realize new phases which are not accessible in static systems. For example, exposing m…
Controlling the Floquet state population and observing micromotion in a periodically driven two-body quantum system
Rémi Desbuquois, Michael Messer, Frederik Görg +3
Near-resonant periodic driving of quantum systems promises the implementation of a large variety of novel effective Hamiltonians. The challenge of Floquet engineering lies in the p…
Creating topological interfaces and detecting chiral edge modes in a 2D optical lattice
N. Goldman, G. Jotzu, M. Messer +3
We propose and analyze a general scheme to create chiral topological edge modes within the bulk of two-dimensional engineered quantum systems. Our method is based on the implementa…
Formation and dynamics of anti-ferromagnetic correlations in tunable optical lattices
Daniel Greif, Gregor Jotzu, Michael Messer +2
We report on the observation of anti-ferromagnetic correlations of ultracold fermions in a variety of optical lattice geometries that are well described by the Hubbard model, inclu…
Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation
Gregor Jotzu, Michael Messer, Frederik Görg +3
We demonstrate a versatile method to create state-dependent optical lattices by applying a magnetic field gradient modulated in time. This allows for tuning the relative amplitude…
Exploring competing density order in the ionic Hubbard model with ultracold fermions
Michael Messer, Rémi Desbuquois, Thomas Uehlinger +4
We realize and study the ionic Hubbard model using an interacting two-component gas of fermionic atoms loaded into an optical lattice. The bipartite lattice has honeycomb geometry…
Emergence of coherence in a uniform quasi-two-dimensional Bose gas
Lauriane Chomaz, Laura Corman, Tom Bienaimé +5
Phase transitions are ubiquitous in our three-dimensional world. By contrast most conventional transitions do not occur in infinite uniform two-dimensional systems because of the i…
Experimental realisation of the topological Haldane model
Gregor Jotzu, Michael Messer, Rémi Desbuquois +4
The Haldane model on the honeycomb lattice is a paradigmatic example of a Hamiltonian featuring topologically distinct phases of matter. It describes a mechanism through which a qu…
Quench-induced supercurrents in an annular Bose gas
Laura Corman, Lauriane Chomaz, Tom Bienaimé +5
We create supercurrents in annular two-dimensional Bose gases through a temperature quench of the normal-to-superfluid phase transition. We detect the amplitude and the chirality o…
Fit-free determination of scale invariant equations of state: application to the 2D Bose gas across the Berezinksii-Kosterlitz-Thouless transition
Rémi Desbuquois, Tarik Yefsah, Lauriane Chomaz +4
We present a general "fit-free" method for measuring the equation of state (EoS) of a scale-invariant gas. This method, which is inspired from the procedure introduced by Ku et al.…
Superfluid behaviour of a two-dimensional Bose gas
Rémi Desbuquois, Lauriane Chomaz, Tarik Yefsah +4
Two-dimensional (2D) systems play a special role in many-body physics. Because of thermal fluctuations, they cannot undergo a conventional phase transition associated to the breaki…
Exploring the thermodynamics of a two-dimensional Bose gas
Tarik Yefsah, Rémi Desbuquois, Lauriane Chomaz +2
Using \emph{in situ} measurements on a quasi two-dimensional, harmonically trapped Rb gas, we infer various equations of state for the equivalent homogeneous fluid. From the…
The equilibrium state of a trapped two-dimensional Bose gas
Steffen P. Rath, Tarik Yefsah, Kenneth J. Guenter +5
We study experimentally and numerically the equilibrium density profiles of a trapped two-dimensional Rb Bose gas, and investigate the equation of state of the homogeneous s…
Tunable Raman Photons from a Single Quantum Dot
G. Fernandez, T. Volz, R. Desbuquois +2
We report the observation of all-optically tunable Raman fluorescence from a single quantum dot. The Raman photons are produced in an optically-driven Lambda-system defined by subj…