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Designing Frustrated Quantum Magnets with Laser-Dressed Rydberg Atoms
Alexander W. Glaetzle, Marcello Dalmonte, Rejish Nath +3
We show how a broad class of lattice spin-1/2 models with angular- and distance-dependent couplings can be realized with cold alkali atoms stored in optical or magnetic trap arrays…
Microscopy of many-body states in optical lattices
Christian Gross, Immanuel Bloch
Ultracold atoms in optical lattices have proven to provide an extremely clean and controlled setting to explore quantum many-body phases of matter. Now, imaging of atoms in such la…
An Aharonov-Bohm interferometer for determining Bloch band topology
Lucia Duca, Tracy Li, Martin Reitter +3
The geometric structure of an energy band in a solid is fundamental for a wide range of many-body phenomena in condensed matter and is uniquely characterized by the distribution of…
Comment on "Consistent thermostatistics forbids negative absolute temperatures"
Ulrich Schneider, Stephan Mandt, Akos Rapp +4
In this comment we argue that negative absolute temperatures are a well-established concept for systems with bounded spectra. They are not only consistent with thermodynamics, but…
Far-from-equilibrium spin transport in Heisenberg quantum magnets
Sebastian Hild, Takeshi Fukuhara, Peter Schauß +5
We study experimentally the far-from-equilibrium dynamics in ferromagnetic Heisenberg quantum magnets realized with ultracold atoms in an optical lattice. After controlled imprinti…
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…