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- Title
Memory Effects in Quantum Dynamics Modelled by Quantum Renewal Processes.
- Authors
Megier, Nina; Ponzi, Manuel; Smirne, Andrea; Vacchini, Bassano
- Abstract
Simple, controllable models play an important role in learning how to manipulate and control quantum resources. We focus here on quantum non-Markovianity and model the evolution of open quantum systems by quantum renewal processes. This class of quantum dynamics provides us with a phenomenological approach to characterise dynamics with a variety of non-Markovian behaviours, here described in terms of the trace distance between two reduced states. By adopting a trajectory picture for the open quantum system evolution, we analyse how non-Markovianity is influenced by the constituents defining the quantum renewal process, namely the time-continuous part of the dynamics, the type of jumps and the waiting time distributions. We focus not only on the mere value of the non-Markovianity measure, but also on how different features of the trace distance evolution are altered, including times and number of revivals.
- Subjects
QUANTUM theory; PHENOMENOLOGY; MEMORY
- Publication
Entropy, 2021, Vol 23, Issue 7, p905
- ISSN
1099-4300
- Publication type
Article
- DOI
10.3390/e23070905