Speaker
Description
Quantum non-Markovianity—the influence of an external memory on a system’s dynamics—has posed longstanding technical and conceptual challenges. Recently, significant insight was transferred from the field of quantum causal structures, highlighting the role of interventions and multi-time correlations. In this talk, I will review the causal-structure approach to non-Markovian multi-time processes and present recent results characterizing system-environment interactions that lead to a specific type of classical memory. This applies to one of the classic RQI topics: relativistic quantum particles with internal structure (or interfering "quantum clocks"). Despite their non-Markovian behaviour defying standard open-system assumptions, the classical-memory nature of their dynamics can greatly simplify their analysis
