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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-9644
DTSTART:20260501T200000Z
DTEND:20260501T220000Z
DTSTAMP:20260405T100601Z
LAST-MODIFIED:20260403T161655Z
LOCATION:5280 Chamberlin
SUMMARY:Modelling Nonequilibrium Superconducting Dynamics for MKID App
 lications\, Preliminary Exam\, Soren Ormseth\, Physics PhD Graduate St
 udent
DESCRIPTION:Microwave Kinetic Inductance Detectors (MKIDs) are a leadi
 ng-edge technology for the high-precision detection of single photons 
 across the electromagnetic spectrum\, from the far-infrared to X-rays.
  While their macroscopic operating principle\, photon-induced shifts i
 n kinetic inductance\, is well understood\, current models often rely 
 on equilibrium approximations that fail to capture the complex\, non-t
 hermal dynamics of quasiparticles and phonons. This gap limits our abi
 lity to optimize MKID sensitivity and resolving power. Here\, we prese
 nt a modeling framework for nonequilibrium superconducting physics tha
 t accounts for quasiparticle and phonon spatial transport and scatteri
 ng. By resolving these dynamics\, this model provides a pathway to und
 erstanding operational behaviors in MKIDs such as pulse-shape variatio
 ns or readout-induced noise. Furthermore\, the universality of this ap
 proach is applicable to the problem of quasiparticle poisoning in supe
 rconducting qubits\, and we aim to provide a unified tool for advancin
 g the performance of next-generation superconducting quantum devices."
URL:https://www.physics.wisc.edu/events/?id=9644
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