BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-2200 DTSTART:20110929T150000Z DURATION:PT1H0M0S DTSTAMP:20260415T045542Z LAST-MODIFIED:20110921T173243Z LOCATION:5310 Chamberlin SUMMARY:Coupled modes and parametric quantum informationprocessing--fr om classical pendula to single photons\, R. G. Herb Condensed Matter S eminar\, Jose Aumentado\, NIST Boulder DESCRIPTION:The simple harmonic oscillator is a fundamental building b lock of everyday physics\, from playground swings to the state of ligh t. However\, energy dissipates in many of these systems in ways that c an be well described by extending these oscillator-like systems throug h coupling to other oscillators. This kind of coupling can be intuitiv ely understood from a classical standpoint\, but it also forms the bas is for the most basic linear optical element-- the beamsplitter. In th is talk\, I'll show how simple superconducting devices (SQUIDs and res onators) can be used to create this interaction with microwave light\, coupling microwave Fock states between harmonic oscillator modes at d ifferent frequencies combining elements of both cavity-QED and linear quantum optics. This generalized beam-splitter process\, although simp le\, can be used to swap unknown quantum states and even build up stra ightforward interferometers (like 'real' beam splitters) albeit in a m ore abstract frequency space. I will discuss the experimental verifica tion of this process so far\, as well as briefly discuss how systems l ike this might be extended to address other problems more traditionall y addressed in quantum optics.
\n URL:https://www.physics.wisc.edu/events/?id=2200 END:VEVENT END:VCALENDAR