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arXiv · 2606.30730

Controlling the non-Markovianity of quantum Brownian motion

Guglielmo Pellitteri·Vittorio Giovannetti·Vasco Cavina
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Abstract

We analyze the exact dynamics of a generalized quantum Brownian motion model, employing Gaussian master equation methods. We demonstrate that, by modulating the relative weights of specific interaction channels, we can control the degree of non-Markovianity of the system, and induce a transition from non-Markovian to Markovian regimes. The non-Markovianity of the evolution is formally characterized by leveraging the Gorini--Kossakowski--Sudarshan--Lindblad theorem and by employing quantitative measures of information backflow. Finally, we clarify the physical mechanism behind the phenomenology of this model, thereby providing a systematic platform for environment engineering through the strategic tuning of dissipation channels.

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Guglielmo Pellitteri, Vittorio Giovannetti, Vasco Cavina. 2026-06-29. Controlling the non-Markovianity of quantum Brownian motion. https://arxiv.org/abs/2606.30730

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