BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-4649
DTSTART:20171026T150000Z
DTEND:20171026T160000Z
DTSTAMP:20260419T021754Z
LAST-MODIFIED:20171019T114025Z
LOCATION:Chamberlin 53100
SUMMARY:Watching a quantum system: How to continuously measure a super
 conducting qubit\, R. G. Herb Condensed Matter Seminar\, Justin Dresse
 l\, Chapman University
DESCRIPTION:It has recently become experimentally possible to monitor 
 the energy levels of a superconducting transmon qubit continuously in 
 time using microwave fields. Such measurements weakly perturb the qubi
 t per unit time\, lead to a competition between unitary Hamiltonian dy
 namics and non-unitary collapse dynamics. I review several subtleties 
 about modeling this measurement process\, and discuss several recent a
 chievements made in collaboration with the Siddiqi laboratory at UC Be
 rkeley. Topics include simultaneous measurements of multiple non-commu
 ting observables\, the active use of the quantum Zeno effect with a mo
 ving measurement basis for qubit control\, and subtle aspects about th
 e information content contained in the collected stochastic readout.
URL:https://www.physics.wisc.edu/events/?id=4649
END:VEVENT
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