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VERSION:2.0
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UID:6aaf86a39f46a
DTSTART:20240710T100000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20240710T110000Z
LOCATION:Seminar Room
SUMMARY:ICFO | VICTOR GITTON
CLASS:PUBLIC
DESCRIPTION:Proving the incompatibility of a distribution with a classical 
 causal structure is generally a difficult task\, due to the non-convex nat
 ure of the problem. This task needs to be tackled to provide examples of q
 uantum nonlocality\, i.e.\, examples of distributions that are compatible 
 with a quantum causal structure but incompatible with the corresponding cl
 assical causal structure. Even in the simple triangle network\, few exampl
 es of quantum nonlocality are known. A candidate is the Elegant Joint Meas
 urement (EJM) distribution\, a highly symmetric distribution that can be o
 btained using quantum states and measurements in the triangle network. Thi
 s distribution has been conjectured to be nonlocal 6 years ago. Motivated 
 by this conjecture\, we developed an improved implementation of the inflat
 ion technique\, which allows to certify the incompatibility of a distribut
 ion with a causal structure. Our implementation allowed us to produce a co
 mputer-assisted proof of nonlocality for the EJM distribution\, thereby op
 ening new avenues to advance the state of the art for certifying causal in
 compatibility in general classical causal structures.
DTSTAMP:20260920T070923Z
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