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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-7875
DTSTART:20220901T180000Z
DTEND:20220901T190000Z
DTSTAMP:20260414T054235Z
LAST-MODIFIED:20220829T133325Z
LOCATION:5310 Chamberlin
SUMMARY:Mid-circuit correction of correlated phase errors on a dual-el
 ement atom array\, R. G. Herb Condensed Matter Seminar\, Hannes Bernie
 n \, U. Chicago
DESCRIPTION:Scaling up invariably error-prone quantum processors is a 
 formidable challenge. While quantum error correction ultimately promis
 es fault-tolerant operation\, the required qubit overhead and error th
 resholds are daunting\, and many codes break down under correlated noi
 se. Recent proposals have suggested a complementary approach based on 
 co-located\, auxiliary ‘spectator’ qubits. These act as in-situ pr
 obes of noise\, and enable real-time\, coherent corrections of the res
 ulting errors on the data qubits. Here\, we use an array of cesium spe
 ctator qubits to correct correlated phase errors on an array of rubidi
 um data qubits [1]. Crucially\, by combining in-sequence readouts\, da
 ta processing\, and feed-forward operations\, these correlated errors 
 are suppressed within the execution of the quantum circuit. 
\nIn the 
 second part of the talk\, I will discuss our progress towards creating
  light-matter interfaces based on individual atoms coupled to nano-pho
 tonic crystal structures with the long-term vision of connecting dista
 nt atom array nodes with entanglement. 
\n
\n[1] Singh\, Bradley\, Ana
 nd\, Ramesh\, White\, Bernien arXiv:2208.11716 (2022)
URL:https://www.physics.wisc.edu/events/?id=7875
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