Seminars & Events

Thursday, September 24th, 2020, 16:00
Speaker: Ana Belén Sainz
from ICTQT
title: Bipartite post-quantum steering in generalised scenarios
Abstract: The study of stronger-than-quantum effects is a fruitful line of research that provides valuable insight into quantum theory. Unfortunately, traditional bipartite steering scenarios can always be explained by quantum theory. Here we show that, by relaxing this traditional setup, bipartite steering incompatible with quantum theory is possible. The two scenarios we describe, which still feature Alice remotely steering Bob’s system, are: (i) one where Bob also has an input and operates on his subsystem, and (ii) the `instrumental steering’ scenario. We show that such bipartite post-quantum steering is a genuinely new type of post-quantum nonlocality, which does not follow from post-quantum Bell nonlocality. In addition, we present a method to bound quantum violations of steering inequalities in these scenarios. [Phys. Rev. Lett. 125, 050404 (2020) — arXiv:1907.03705].
seminar organised by: Quantum Information and Quantum Computing Working Group of Center for Theoretical Physics of the Polish Academy of Sciences (CTP PAS)
Zoom link: https://tinyurl.com/qiqcwg-warsaw

 

Thursday, September 10, 2020, 14:00
Speaker: Ninnat Dangniam
from Fudan University
title: Optimal verification of stabilizer states
seminar organised by: Quantum Information and Quantum Computing Working Group of Center for Theoretical Physics of the Polish Academy of Sciences (CTP PAS)
Zoom link: https://zoom.us/j/92227103826?pwd=blhRaVc3Z2tQb010ZEpDWllSZnB5dz09 or https://tinyurl.com/qiqcwg-warsaw

 

 

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