Condensed Matter Seminar (News&Views series): Thursday 4 Nov 2021 at 3:00 pm

[CMSP Seminars Secretariat]

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Virtual - Zoom Meeting

CMSP News & Views Seminar
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/The News & Views Seminars are meant to address our section as a whole, 
and therefore include an extensive pedagogical introduction to the 
topic, and present the main physical ideas of the research in a way 
understandable by everybody in the section. The goal is to bridge 
distances among different subgroups of our diverse CMSP section. //The 
diversity in our section makes it a unique place for crossing bridges 
among different topics, and for cross-fertilization among seemingly 
distant fields. /
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** * * Thursday, 4 November 2021 at 3:00 p.m.**(Rome time)* * **

Speaker: *Anushya CHANDRAN **(Boston University)***

Title: *"Quantization of dynamics in quasi periodically driven systems"*

Register in advance at:
https://zoom.us/meeting/register/tJcsd-2hqDksGNbmT6KOdTdneXZEF1oGQGwv
After registering, you will receive a confirmation email containing 
information about joining the seminar.


_Abstract_:


The past decade has witnessed a topological revolution in our 
understanding of electronic band structures, driven by the discovery of 
topological insulators, Weyl semi-metals, graphene and other topological 
materials. Concurrently, quantum simulators have increased in their 
power and scope, offering exquisite dynamical control of tens or even 
hundreds of individual atoms. Remarkably, these advances can be 
connected --- the dynamics of driven few level systems can be described 
using band structures in "synthetic dimensions'', one per driving tone. 
Topological order in the synthetic band structure then leads to 
quantized dynamical responses in the driven atomic system.

In this talk, I will use a unifying frequency lattice construction to 
reveal nonadiabatic topological responses in quasiperiodically driven 
systems. We will find that quasi-periodically driven qubits already 
exhibit topologically distinct dynamical phases, and that a 2-tone 
driven inhomogenous wire can function as a quantized energy pump at any 
temperature. The latter system provides one of the few examples of 
many-body localization protected order that is absolutely stable. I will 
argue that the quantized energy pumping regime is accessible in 
near-term optical and microwave cavity-QED experiments, and that 
furthermore, it is useful to prepare highly excited non-classical cavity 
states.


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CMSP Seminars support:OnlineCMSP at ictp.it  

CMSP, Condensed Matter & Statistical Physics Section
http://www.ictp.it/research/cmsp.aspx

The Abdus Salam International Centre for Theoretical Physics
https://www.ictp.it/

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