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24 papers · 1 filter
Introduction to the physics of artificial gauge fields
Jean Dalibard
Simulating magnetic effects with cold gases of neutral atoms is a challenge. Since these atoms have no charge, one needs to create artificial gauge fields by taking advantage of th…
Direct imaging of topological edge states in cold-atom systems
N. Goldman, J. Dalibard, A. Dauphin +4
Detecting topological order in cold-atom experiments is an ongoing challenge, the resolution of which offers novel perspectives on topological matter. In material systems, unambigu…
Strongly Interacting Two-Dimensional Bose Gases
Li-Chung Ha, Chen-Lung Hung, Xibo Zhang +3
We prepare and study strongly interacting two-dimensional Bose gases in the superfluid, the classical Berezinskii-Kosterlitz-Thouless (BKT) transition, and the vacuum-to-superfluid…
Two-dimensional dynamics of expansion of a degenerate Bose gas
Igor E. Mazets
Expansion of a degenerate Bose gas released from a pancakelike trap is numerically simulated under the assumption of separation of the motion in the plane of the loose initial trap…
Measuring topology in a laser-coupled honeycomb lattice: From Chern insulators to topological semi-metals
N. Goldman, E. Anisimovas, F. Gerbier +3
Ultracold fermions trapped in a honeycomb optical lattice constitute a versatile setup to experimentally realize the Haldane model [Phys. Rev. Lett. 61, 2015 (1988)]. In this syste…
Identifying topological edge states in 2D optical lattices using light scattering
Nathan Goldman, Jerome Beugnon, Fabrice Gerbier
We recently proposed in a Letter [Physical Review Letters 108 255303] a novel scheme to detect topological edge states in an optical lattice, based on a generalization of Bragg spe…