Bell's theorem proves that quantum theory is inconsistent with local physical models. It has
propelled research in the foundations of quantum theory and quantum information science …

Reichenbach's principle asserts that if two observed variables are found to be correlated,
then there should be a causal explanation of these correlations. Furthermore, if the …

Quantum networks allow in principle for completely novel forms of quantum correlations. In
particular, quantum nonlocality can be demonstrated here without the need of having …

The problem of causal inference is to determine if a given probability distribution on
observed variables is compatible with some causal structure. The difficult case is when the …

Network Bell experiments give rise to a form of quantum nonlocality that conceptually goes
beyond Bell's theorem. We investigate here the simplest network, known as the bilocality …

Finding quantitative aspects of quantum phenomena which cannot be explained by any
classical model has foundational importance for understanding the boundary between …

The development of large-scale quantum networks promises to bring a multitude of
technological applications as well as shed light on foundational topics, such as quantum …

A central question for causal inference is to decide whether a set of correlations fits a given
causal structure. In general, this decision problem is computationally infeasible and hence …

In a quantum network, distant observers sharing physical resources emitted by independent
sources can establish strong correlations, which defy any classical explanation in terms of …

Networks composed of independent sources of entangled particles that connect distant
users are a rapidly developing quantum technology and an increasingly promising test-bed …