5 papers · 1 filter
Open quantum dynamics without Complete Positivity: a criticism
Fabio Benatti, Dariusz ChruÅciÅski, Saverio Pascazio
The requirement of complete positivity is very often regarded as a fundamental consistency condition for the description of open quantum dynamics. We critically examine this requir…
Superactivation of memory effects in a classical Markov environment
Fabio Benatti, Giovanni Nichele
We investigate a phenomenon known as Superactivation of Backflow of Information (SBFI); namely, the fact that the tensor product of a non-Markovian dynamics with itself exhibits Ba…
Quantum versus classical -divisibility
Fabio Benatti, Dariusz ChruÅciÅski, Giovanni Nichele
-divisibility is a central concept in both classical and quantum non-Markovian processes; in particular, it is strictly related to the notion of information backflow. When restr…
Ultrafast pump-probe phase-randomized tomography
Filippo Glerean, Enrico Maria Rigoni, Giacomo Jarc +6
Measuring fluctuations in matter's low energy excitations is the key to unveil the nature of the nonequilibrium response of materials. A promising outlook in this respect is offere…
Open Quantum Dynamics: Memory Effects and Superactivation of Backflow of Information
Fabio Benatti, Giovanni Nichele
We investigate the divisibility properties of the tensor products of open quantum dynamics with time-dependent generators. These dynami…