Learning Volterra Kernels for Non-Markovian Open Quantum Systems

Fuente: arXiv
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Autori principali: Adriazola, Jimmie, Roszak, Katarzyna
Natura: Preprint
Pubblicazione: 2026
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author Adriazola, Jimmie
Roszak, Katarzyna
author_facet Adriazola, Jimmie
Roszak, Katarzyna
contents We develop a data-driven framework for identifying non-Markovian dynamical equations of motion for open quantum systems. Starting from the Nakajima--Zwanzig formalism, we vectorize the reduced density matrix into a four-dimensional state vector and cast the dynamics as a Volterra integro-differential equation with an operator-valued memory kernel. The learning task is then formulated as a constrained optimization problem over the admissible operator space, where correlation functions are approximated by rational functions using Padé approximants. We establish well-posedness of the learnin
format Preprint
id arxiv_https___arxiv_org_abs_2601_09075
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Learning Volterra Kernels for Non-Markovian Open Quantum Systems
Adriazola, Jimmie
Roszak, Katarzyna
Quantum Physics
Optimization and Control
We develop a data-driven framework for identifying non-Markovian dynamical equations of motion for open quantum systems. Starting from the Nakajima--Zwanzig formalism, we vectorize the reduced density matrix into a four-dimensional state vector and cast the dynamics as a Volterra integro-differential equation with an operator-valued memory kernel. The learning task is then formulated as a constrained optimization problem over the admissible operator space, where correlation functions are approximated by rational functions using Padé approximants. We establish well-posedness of the learnin
title Learning Volterra Kernels for Non-Markovian Open Quantum Systems
topic Quantum Physics
Optimization and Control
url https://arxiv.org/abs/2601.09075