Measures of non-Markovianity: Divisibility versus backflow of information

We analyze two recently proposed measures of non-Markovianity: one based on the concept of divisibility of the dynamical map and the other one based on distinguishability of quantum states. We provide a model to show that these two measures need not agree. In addition, we discuss possible generaliza...

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Veröffentlicht in:	Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-05, Vol.83 (5), Article 052128
Hauptverfasser:	Chruściński, Dariusz, Kossakowski, Andrzej, Rivas, Ángel
Format:	Artikel
Sprache:	eng
Schlagworte:	CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS INFORMATION QUANTUM STATES
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Beschreibung
Zusammenfassung:	We analyze two recently proposed measures of non-Markovianity: one based on the concept of divisibility of the dynamical map and the other one based on distinguishability of quantum states. We provide a model to show that these two measures need not agree. In addition, we discuss possible generalizations and intricate relations between these measures.
ISSN:	1050-2947 1094-1622
DOI:	10.1103/PhysRevA.83.052128