Non-Markovianity criteria for open system dynamics

摘要: A universal definition of non-Markovianity for open systems dynamics is proposed. It extended from the classical to quantum realm by showing that a `transition' Markov non-Markov regime occurs when correlations between system and environment, generated their joint evolution, can no longer be neglected. The suggested based on comparison measured correlation functions those built assuming in thus giving figure merit error coming this assumption. shown knowledge dynamical map initial condition not enough fully characterise non-Markovian reduced system. example three exactly solvable models, i.e. decoherence spontaneous emission qubit bosonic bath photon's polarization induced interaction with its spacial degrees freedom, reveals previously proposed Markovianity criteria measures which are analysis fail recognise behaviour.