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Open Quantum Systems Decoherence

Rotating-Wave and Secular Approximations for Open Quantum Systems

arXiv

Authors: Daniel Burgarth, Paolo Facchi, Giovanni Gramegna, Kazuya Yuasa

Year

2026

Paper ID

39079

Status

Preprint

Abstract Read

~2 min

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Abstract

We derive a nonperturbative bound on the distance between evolutions of open quantum systems described by time-dependent generators. We show how this result can be employed to provide an explicit upper bound on the error of the rotating-wave approximation in the presence of dissipation and decoherence. We apply the derived bound to the strong-coupling limit in open quantum systems and to the secular approximation used to obtain a master equation from the Redfield equation.

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This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
It adds a 2026 reference point for readers tracking recent quantum research.
We derive a nonperturbative bound on the distance between evolutions of open quantum systems described by time-dependent generators.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2603.26606 [2] arXiv https://arxiv.org/abs/2603.26606 [3] Publisher https://arxiv.org/abs/2603.26606

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