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SUMMARY:Dynamical Many-body Freezing in Periodically Driven Quantum System
 s - Sayan Choudhury\, Harish-Chandra Research Institute
DTSTART:20240701T130000Z
DTEND:20240701T140000Z
UID:TALK217972@talks.cam.ac.uk
CONTACT:Gaurav
DESCRIPTION:Periodic driving provides a powerful tool for the coherent con
 trol of quantum matter. In this talk\, I will discuss two routes to realiz
 e dynamical many-body freezing in periodically driven quantum systems. In 
 the first half of the talk\, I will present a two-rate drive\nprotocol tha
 t can be used to engineer exact Floquet flat bands in a large class of clo
 sed quantum many-body systems. This leads to perfect many-body freezing an
 d implies a strong violation of the eigenstate thermalization hypothesis. 
 In the second half of the talk\, I will discuss a counter-diabatic (CD) dr
 iving protocol to realize dynamical many-body freezing and eternal entangl
 ement oscillations in the periodically driven Lipkin-Meshkov-Glick model. 
 More generally\, CD\ndriving leads to Floquet eigenstates with anomalously
  low entanglement and consequently a lowering of the average eigenstate en
 tanglement. These results suggest that CD driving protocols can provide a 
 powerful route to realize long-lived Floquet phases of matter.
LOCATION:TCM Seminar Room
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