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Fr, 15.09.2023 14:00

Indefinite causal order from Bell nonlocality

I will talk about a method to leverage the Bell nonlocality of quantum physics to certify indefinite causal order in the quantum switch in the presence of partial knowledge of the causal structure.

I will focus on the intuition of how exactly Bell nonlocality is leveraged here, and will give examples based on the CHSH and GHZ tests. I also hope to discuss with you what the physical significance of the mathematical definition of indefinite causal order certified here is, and what other phenomena could potentially be certified by using methods like this (non-absoluteness of observed events and genuine multipartite nonlocality being examples).

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Speaker: Tein van der Lugt (University of Oxford)

 

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