1210.8079 (Dariusz Chruściński et al.)

Witnessing non-Markovianity of quantum evolution    [PDF]

Dariusz Chruściński, Andrzej Kossakowski

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 entropic quantities, fidelity and Wigner-Yanase-Dyson skew information.

View original: http://arxiv.org/abs/1210.8079