Detection of quantum non-Markovianity close to the Born-Markov approximation
Quantum Physics
2020-04-29 v1
Abstract
We calculate in an exact way the conditional past-future correlation for the decay dynamics of a two-level system in a bosonic bath. Different measurement processes are considered. In contrast to quantum memory measures based solely on system propagator properties, here memory effects are related to a convolution structure involving two system propagators and the environment correlation. This structure allows to detect memory effects even close to the validity of the Born-Markov approximation. An alternative operational-based definition of environment-to-system backflow of information follows from this result. We provide experimental support to our results by implementing the dynamics and measurements in a photonic experiment.
Keywords
Cite
@article{arxiv.2001.01738,
title = {Detection of quantum non-Markovianity close to the Born-Markov approximation},
author = {Thais de Lima Silva and Stephen P. Walborn and Marcelo F. Santos and Gabriel H. Aguilar and Adrián A. Budini},
journal= {arXiv preprint arXiv:2001.01738},
year = {2020}
}