Measuring non-Markovianity via incoherent mixing with Markovian dynamics
Dario De Santis, Vittorio Giovannetti · Physical Review A · 2021
We introduce a measure of non-Markovianity based on the minimal amount of extra Markovian noise we have to add to the process via incoherent mixing, in order to make the resulting transformation Markovian too at all times. We show how to evaluate this measure by considering the set of depolarizing evolutions in arbitrary dimension and the set of dephasing evolutions for qubits.