ELFT HÍRADÓ

[Andras Palyi <palyi AT mail.bme.hu>]

Dear Colleagues, 
 
Next Monday the BME Exotic Quantum Phases seminar series continues with this 
talk:
 
Speaker: Tamás Kriváchy (Geneva)
Title: A neural network oracle for quantum nonlocality problems in networks
Reference: https://arxiv.org/abs/1907.10552 <https://arxiv.org/abs/1907.10552>
Time: Aug 10 Monday, 14:00 (sharp)
Location: online, in Microsoft Teams (see link below)
 
Abstract: "Characterizing quantum nonlocality in networks is a challenging, 
but important problem. Using quantum sources one can achieve distributions 
which are unattainable classically. A key point in investigations is to 
decide whether an observed probability distribution can be reproduced using 
only classical resources. This causal inference task is challenging even for 
simple networks, both analytically and using standard numerical techniques. 
We propose to use neural networks as numerical tools to overcome these 
challenges, by learning the classical strategies required to reproduce a 
distribution. As such, the neural network acts as an oracle, demonstrating 
that a behavior is classical if it can be learned. We apply our method to 
several examples in the triangle configuration. After demonstrating that the 
method is consistent with previously known results, we give solid evidence 
that the distribution presented in [N. Gisin, Entropy 21(3), 325 (2019)] is 
indeed nonlocal as conjectured. Finally we examine the genuinely nonlocal 
distribution presented in [M.-O. Renou et al., PRL 123, 140401 (2019)], and, 
guided by the findings of the neural network, conjecture nonlocality in a new 
range of parameters in these distributions. The method allows us to get an 
estimate on the noise robustness of all examined distributions."
 
The link to join the talk in Teams: 
https://teams.microsoft.com/l/meetup-join/19%3af72be9c903b24298bdb1375b708043c7%40thread.tacv2/1596811103123?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22f8b27e90-dbca-4bb5-813c-d6415577ec35%22%7d
 
<https://teams.microsoft.com/l/meetup-join/19%3af72be9c903b24298bdb1375b708043c7%40thread.tacv2/1596811103123?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22f8b27e90-dbca-4bb5-813c-d6415577ec35%22%7d>

Best regards,
Andras Palyi