Floquet engineering to exotic topological phases in cold-atom systems

Datum

12.06.2019

Zeit

11:00 - 12:00

Sprecher

Liu Hui

Zugehörigkeit

Lanzhou University / China

Sprache

en

Hauptthema

Materialien

Host

Grit Rötzer

Beschreibung

Topological phases with large topological numbers have been widely studied as a typical class of exotic states of matter with potentially important applications. Although several models have been shown to support states with large topological numbers, they are difficult to realize in solid systems due to the complexity of various intervening factors. Inspired by the realization of synthetic spin-orbit coupling in cold-atom system [Z. Wu, et al., Science 354, 83 (2016)], we propose a periodic quenching scheme to realize large-topological-number phases in optical lattices. Via introducing the periodic quenching to the Raman lattice, it is found that a large number of topological edge states can be induced in a controllable manner from the static topologically trivial system. Our result provides an experimentally accessible method to artificially synthesize and manipulate exotic topological states with large topological numbers. .

Links

• Seminars at the IFW

Letztmalig verändert: 24.06.2019, 15:23:18