Quantum Non-Markovianity: Using and Measuring It
July 2nd, 2018 CARLOS PINEDA Universität Wien

We construct measures for the non-Markovianity of quantum evolution with a physically meaningful interpretation. We first provide a general setting in the framework of channel capacities and propose two families of meaningful quantitative measures, based on the largest revival of a channel capacity, avoiding some drawbacks of other non-Markovianity measures. We relate the proposed measures to the task of information screening. Depending on time, I will discuss one or more of the following scenarios: (i) For semiclassical environments, non-Markovianity is a remarkable marker of the underlying KAM structure. (ii) With a kicked spin chain we exemplify the connection between non-Markovianity and localization. (iii) With random matrices, we study the crossover between weak coupling (and thus markovian) to strong coupling with generic non-Markovian behaviour.

Seminar, July 2, 2018, 15:00. ICFO’s Seminar Room

Hosted by Prof. Antonio Acín