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Realizing the entanglement Hamiltonian of a topological quantum Hall system
Quentin Redon, Qi Liu, Jean-Baptiste Bouhiron +4
Topological quantum many-body systems, such as Hall insulators, are characterized by a hidden order encoded in the entanglement between their constituents. Entanglement entropy, an…
Loading and compression of a single two-dimensional Bose gas in an optical accordion
J. L. Ville, T. Bienaimé, R. Saint-Jalm +8
The experimental realization of 2D Bose gases with a tunable interaction strength is an important challenge for the study of ultracold quantum matter. Here we report on the realiza…
Creating fractional quantum Hall states with atomic clusters using light-assisted insertion of angular momentum
Junyi Zhang, Jérôme Beugnon, Sylvain Nascimbene
We describe a protocol to prepare clusters of ultracold bosonic atoms in strongly-interacting states reminiscent of fractional quantum Hall states. Our scheme consists in injecting…
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…
Measuring the Chern number of Hofstadter bands with ultracold bosonic atoms
M. Aidelsburger, M. Lohse, C. Schweizer +6
Sixty years ago, Karplus and Luttinger pointed out that quantum particles moving on a lattice could acquire an anomalous transverse velocity in response to a force, providing an ex…
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…