Hidden non-Markovianity in open quantum systems
Quantum Physics
2021-01-08 v1
Abstract
We show that non-Markovian open quantum systems can exhibit exact Markovian dynamics up to an arbitrarily long time; the non-Markovianity of such systems is thus perfectly "hidden", i.e. not experimentally detectable by looking at the reduced dynamics alone. This shows that non-Markovianity is physically undecidable and extremely counterintuitive, since its features can change at any time, without precursors. Some interesting examples are discussed.
Cite
@article{arxiv.2009.10605,
title = {Hidden non-Markovianity in open quantum systems},
author = {Daniel Burgarth and Paolo Facchi and Marilena Ligabò and Davide Lonigro},
journal= {arXiv preprint arXiv:2009.10605},
year = {2021}
}
Comments
9 pages, 4 figures