Hidden non-Markovianity in open quantum systems
Daniel Burgarth, Paolo Facchi, Marilena Ligabò, Davide Lonigro
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.
Topics & Concepts
CounterintuitiveUndecidable problemStatistical physicsMarkov processQuantumComputer scienceOpen system (computing)Quantum decoherencePhysicsTheoretical computer scienceQuantum mechanicsMathematicsDecidabilitySoftwareProgramming languageStatisticsQuantum Information and CryptographyQuantum Mechanics and ApplicationsAdvanced Thermodynamics and Statistical Mechanics