Memory effects in quantum dynamics modelled by quantum renewal processes

• URL: http://arxiv.org/abs/2106.07697v1
• Date: Mon, 14 Jun 2021 18:27:46 GMT
• Title: Memory effects in quantum dynamics modelled by quantum renewal processes
• Authors: Nina Megier, Manuel Ponzi, Andrea Smirne, Bassano Vacchini
• Abstract summary: We focus on quantum non-Markovianity and model the evolution of open quantum systems by quantum renewal processes. 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Simple, controllable models play an important role to learn 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.

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