Speaker
Description
The study of quantum causal structures brings insights into both foundational and applied aspect of quantum theory. Foundationally, it has been found that quantum theory can be formulated without assigning causal relations a priori. This provides the possibility to discover unknown causal relations and to model scenarios with indefinite causal order, which can arise in quantum-gravity scenarios but are also accessible in table-top experiments. When applied to ordinary, time ordered quantum processes, the framework clarifies the notion of Markovianity (absence of memory) and provides tools to fully characterize stochastic quantum processes through multi-time correlations and to discriminate quantum vs classical memory. I will give an overview of the approach and of some significant results, with an outlook to prominent research directions.
