1:45 p.m.
Dear friends,
On September 15th at 14:00 in D5.01 we'll have a guest seminar by Ryan Mark Samolis, a
Master's student from the University of Zurich. Ryan will talk to us about
contextuality; see the title and abstract below.
Best regards,
Will Schober
title:
Leifer’s Generalized Zeno Effect is a proof of Contextuality
abstract:
The field of quantum foundations probes the boundary between genuinely quantum and
semi-classical phenomena. Modern hidden variable theories allow us to emulate aspects of
quantum mechanics, like entanglement and uncertainty relations, previously attributed
exclusively to quantum models. Contextuality, a generalization of Bell nonlocality,
captures this essence of “quantum weirdness”. One way to prove contextuality for a given
phenomenon involves showing measurement statistics cannot be reproduced by modern hidden
variable models. This thesis concerns Zeno-type effects which involve performing frequent
projective measurements to “freeze” the time evolution of a quantum state. Matthew Leifer
recently argued the quantum Zeno effect only occurs in contextual models. We utilize a
noncontextual model of operational process theories to find a probability bound of
successfully freezing this evolution.