Artificial Gauge Fields with Ultracold Atoms in Optical Lattices

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.

Riassunto

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.

Dettagli sul prodotto

• Autori: Monika Aidelsburger
• Editore: Springer, Berlin
• Contenuto: Libro
• Forma del prodotto: Tascabile
• Data pubblicazione: 01.01.2019
• Categoria: Scienze naturali, medicina, informatica, tecnica > Fisica, astronomia > Fisica teorica
• EAN: 9783319798486
• ISBN: 978-3-31-979848-6
• Numero di pagine: 172
• Illustrazioni: XIII, 172 p. 76 illus., 2 illus. in color.
• Dimensioni (della confezione): 15.5 x 1 x 23.5 cm
• Peso (della confezione): 295 g
• Serie: Springer Theses; Springer Theses
• Categorie: B, Materialwissenschaft, Physik der kondensierten Materie (Flüssigkeits- und Festkörperphysik), Tieftemperaturphysik, Quantum physics (quantum mechanics & quantum field theory), Physics and Astronomy, Quantum computers, Spintronics, Quantum Information Technology, Spintronics, Low Temperature Physics, Low temperatures, Condensed materials, Phase transformations (Statistical physics), Quantum Gases and Condensates