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SUMMARY:Physics and complexity in a growing quantum world [Confirmed]
DTSTART:20260325T180000Z
DTEND:20260325T193000Z
DTSTAMP:20260510T152200Z
UID:indico-event-2216@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Thomas Schuster (California Institute of Technology 
 (Caltech))\n\n Modern quantum experiments achieve coherences and scales o
 nce only dreamed of\, pushing the limits of physics and computation. To un
 derstand and guide these advances\, the questions we ask of quantum physic
 s today---centered around the behavior of quantum information and complexi
 ty in large coherent systems---differ essentially from those asked in the 
 past. In this talk\, I will present two examples drawn from my work in whi
 ch simple ideas regarding the dynamics of quantum information provide a un
 ifying lens for answering these questions. First\, I will present a classi
 cal computational algorithm that can provably simulate quantum circuits wi
 th uncorrected noise in polynomial time. This result establishes firm limi
 ts on the magnitude of quantum advantage that any such experiment can achi
 eve. Second\, I will discuss the emergence of universal random matrix phen
 omena in local quantum circuits and time-dynamics. I will show that such p
 henomena appear exponentially faster than previously believed\, with appli
 cations to more efficient quantum device benchmarking\, quantum cryptograp
 hic protocols\, and fundamental questions in physics. I will conclude by l
 ooking forward\, and mentioning several open directions at the interface o
 f complexity\, physics\, and quantum computing experiments.\n\nhttps://eve
 nts.perimeterinstitute.ca/event/2216/
LOCATION:PI/2-292 - Time Room (Perimeter Institute for Theoretical Physics
 )
URL:https://events.perimeterinstitute.ca/event/2216/
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