Condensed Matter Physics Seminar

Speaker: Babak Seradjeh, Indiana University

Title: Floquet Topology: Fast, Slow, and Across

Refreshments available at 3:45 pm.

Date: Mon, 24 Sep 2018, 4:10 pm – 5:10 pm
Type: Seminar
Location: 1400 BPS Bldg.

Abstract:
A periodically-driven quan­tum sys­tem can exhibit essen­tially non-equilib­rium topo­logical phases. Transi­tions be­tween these topo­logical phases can be tuned by drive parameters, such as the fre­quency, the ampli­tude, or the shape of the drive. In this talk, I will dis­cuss some of our recent results regard­ing Floquet topo­logy for fast and slow drives. This includes experi­mental sig­natures of Floquet topo­logical phases in the noise spec­trum, as well as a remark­able random walk process result­ing in uni­versal fluctu­ations of topo­logical invari­ants at low fre­quency. I will con­clude with the out­look for realizing Floquet topo­logical phases, future direc­tions of this area of re­search, and the excit­ing connec­tions it makes across con­densed mat­ter, atomic and optical, and statis­tical physics of quan­tum systems.