Witnessing non-Markovianity of quantum evolution
Institute of Physics, Nicolaus Copernicus University Grudziądzka
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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