BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:Physics Colloquium on Quasi-Periodic Driving
X-WR-TIMEZONE:Central Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260819T022051Z
UID:tag:localist.com\,2008:EventInstance_42213940936805
DTSTART:20230220T220000Z
DTEND:20230220T230000Z
DESCRIPTION:Anushya Chandran (Hosted by Henriksen) from Boston University w
 ill be presenting the colloquium.\n\nAbstract: \n\nIn the past decade\, qu
 antum simulators have increased in their power and scope\, offering exquis
 ite dynamical control of tens or even hundreds of individual qubits. Centr
 al to this development is the external driving toolbox. Be it resonant or 
 off-resonant\, continuous or pulsed\, driving protocols have come a long w
 ay since the early days of NMR to provide detailed control of both effecti
 ve Hamiltonian and state. In this talk\, I will argue for the addition of 
 a new class of driving protocol to the quantum mechanics’ toolbox: quasi
 periodic driving.\n\nFirst\, I will show that quasiperiodically driven sys
 tems realize robust non-classical energy pumps\, with topological invarian
 ts characterizing the dynamical response. Remarkably\, the pumped energy q
 uasi-periodically re-coheres. I will describe current experimental efforts
  in superconducting circuits to exploit this re-coherence to prepare highl
 y excited non-classical cavity states. Next\, I will show that quasiperiod
 ic driving can lead to chaotic response\, even in a single qubit. Chaos re
 quires a minimum number of incommensurate driving tones\; I will argue tha
 t the number is three\, and discuss prospects of designer baths in such sy
 stems. More generally\, multi-tone driving can be understood in terms of "
 synthetic dimensions"\, which enables a broad range of condensed matter ph
 enomena to be translated into robust dynamical responses of lower dimensio
 nal systems.
GEO:38.649005;-90.305396
LOCATION:Crow Hall\, 204
SUMMARY:Physics Colloquium on Quasi-Periodic Driving
URL;VALUE=URI:https://happenings.washu.edu/event/physics_colloquium_with_an
 ushya_chandran
END:VEVENT
END:VCALENDAR