We introduce a tool for the quantitative characterization of the departure from Markovianity of a given dynamical process. Our tool can be applied to a generic N-level system and extended straightforwardly to Gaussian continuous-variable systems. It is linked to the change of the volume of physical states that are dynamically accessible to a system and provides qualitative expectations in agreement with some of the analogous tools proposed so far. We illustrate its predictive power by tackling a few canonical examples.
|Numero di pagine||5|
|Rivista||PHYSICAL REVIEW A|
|Stato di pubblicazione||Published - 2013|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics