[institut] [phys4phys] HINT & GPF seminar, 17th October

[Maja Buric]

Dear colleagues,

a joint seminar of GPF and HINT project will be given by Ivan Šupić,
Université Grenoble Alpes: Saint-Martin-d'Hères, Auvergne-Rhône-Alpes,
on Friday 17th of October at 13.15, small seminar room on the second 
floor, at the IPB


Tile: Compiled Bell inequalities 

Abstract:
Bell inequalities quantitatively separate classical from quantum 
correlations, serving as a cornerstone for experimental tests
of entanglement and for device-independent approaches. The compilation of 
Bell tests enables such scenarios to be implemented
without the requirement of physical spatial separation: instead of 
isolated laboratories, cryptographic protocols are used to
constrain and coordinate the behavior of the participants. A key question 
is to understand the asymptotic quantum values of
these compiled tests—that is, the limiting correlations achievable when 
the players have unbounded local dimension and perform
sequential measurements.
Technically, I will present an operator-algebraic framework connecting 
sequential measurements with commuting-operator models.
This includes the construction of universal C*-algebras generated by 
sequential PVM/POVM families, the characterization of
asymptotic correlations through their representations, and the development 
of key technical tools (such as a chain rule for
Radon–Nikodym derivatives of completely positive maps) that facilitate 
comparison between different strategies. Finally, I will
outline our main results and open problems arising from the connection 
between cryptographic compilation of Bell tests, the
limits of quantum correlations, and the structure of C*-algebras of 
sequential measurements.


Link:
https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww


Best regards,
Maja Buric
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phys4phys at mail.ipb.ac.rs
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