Hidden non-Markovianity in open quantum systems
arXiv:2009.10605 · doi:10.1103/PhysRevA.103.012203
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.
arXiv comment9 pages, 4 figures
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