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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-1155@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20261016T140000
DTEND;TZID=Europe/Paris:20261016T151500
DTSTAMP:20261008T090657Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/informal-quantum
 -seminar-chunxiao-liu/
SUMMARY:Informal Quantum Seminar: Chunxiao Liu - Salle des séminaires du F
 AST et du LPTMS\, bâtiment Pascal n°530 - 16 Oct 26 14:00
DESCRIPTION:Classical limits and quantum advantage in nonlocal games\nChunx
 iao Liu (LPS)\n&nbsp\;\n\nWe introduce nonlocal games\, which are multipla
 yer games in which players must coordinate their answers to local question
 s to win\, without communicating with each other. They can win more often 
 when they are allowed to share an entangled quantum state (quantum strateg
 y) than when they are not (classical strategy). This advantage of quantum 
 strategies reveals correlations that cannot be explained by consistent\, p
 redetermined local answers—a manifestation of quantum contextuality. In 
 this talk\, I will introduce such games for stabilizer states and quantify
  their advantage by bounding the optimal classical winning probability. Us
 ing classical coding theory and statistical mechanics\, we derive rigorous
  bounds and characterize its asymptotic behavior for the 1D cluster state 
 and the 2D toric code. For cluster states\, contextuality can be witnessed
  even when the global state-preparation fidelity decreases exponentially w
 ith system size. These results provide scalable tests of many-body quantum
  correlations\, with applications to benchmarking quantum state preparatio
 n.
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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DTSTART:20260329T030000
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