Artificial Gauge Fields with Ultracold Atoms in Optical Lattices

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Springer Theses

ISBN: 3319258273
ISBN 13: 9783319258270
Autor: Aidelsburger, Monika
Verlag: Springer Verlag GmbH
Umfang: xiii, 172 S., 74 s/w Illustr., 2 farbige Illustr., 172 p. 76 illus., 2 illus. in color.
Erscheinungsdatum: 22.12.2015
Auflage: 1/2016
Produktform: Gebunden/Hardback
Einband: GEB

This work reports on the generation of artificial magnetic fields with ultracold atoms in optical lattices using laser-assisted tunneling, as well as on the first Chern-number measurement in a non-electronic system.It starts with an introduction to the Hofstadter model, which describes the dynamics of charged particles on a square lattice subjected to strong magnetic fields. This model exhibits energy bands with non-zero topological invariants called Chern numbers, a property that is at the origin of the quantum Hall effect. The main part of the work discusses the realization of analog systems with ultracold neutral atoms using laser-assisted-tunneling techniques both from a theoretical and experimental point of view. Staggered, homogeneous and spin-dependent flux distributions are generated and characterized using two-dimensional optical super-lattice potentials. Additionally their topological properties are studied via the observation of bulk topological currents. The experimental techniques presented here offer a unique setting for studying topologically non-trivial systems with ultracold atoms.

Artikelnummer: 8636533 Kategorie:

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