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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-8395
DTSTART:20240315T203000Z
DTEND:20240315T230000Z
DTSTAMP:20260413T223206Z
LAST-MODIFIED:20240311T185448Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Using Dissipation to Preserve Superconducting Qubit Coherence\
 , Physics Department Colloquium\, Eli Levinson-Falk\, USC
DESCRIPTION:Superconducting qubits are a leading quantum information t
 echnology\, combining high coherence\, strong addressability\, and fle
 xible engineering. However\, they are still prone to decoherence due t
 o dissipative couplings to an uncontrolled environment. However\, we c
 an use dissipative coupling to a controlled environment to counteract 
 decoherence and preserve the desired behavior. I will discuss some of 
 our results using this approach\, and focus on our recent development 
 of a "dissipator" device that creates on-demand loss. By targeting thi
 s dissipation at a cavity\, we can rapidly remove photons that might c
 ause dephasing in a qubit coupled to the cavity. This dissipation both
  damps and refrigerates the target cavity\, allowing for long-lived qu
 bit coherence even when the bath temperature is high. I will discuss h
 ow to use this approach in a variety of applications\, including both 
 operating large-scale quantum processors and studies of foundational q
 uantum mechanics.
URL:https://www.physics.wisc.edu/events/?id=8395
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