https://doi.org/10.1140/epjd/e2013-40171-9
Regular Article
Witnessing non-Markovianity of quantum evolution
Institute of Physics, Nicolaus Copernicus University Grudziądzka
5/7, 87–100
Toruń,
Poland
a e-mail: darch@fizyka.umk.pl
Received:
26
March
2013
Received in final form:
22
July
2013
Published online:
23
January
2014
We provide further characterization of non-Markovian quantum dynamics based on the concept of divisible dynamical maps. In analogy to entanglement witness we propose a non-Markovianity witness and introduce the corresponding measure of non-Markovianity. We also provide characterization of non-Markovianity in terms of Wigner-Yanase-Dyson skew information.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2014