Dynamical maps beyond Markovian regime

D Chruściński - Physics Reports, 2022 - Elsevier
Quantum dynamical maps provide suitable mathematical representation of quantum
evolutions. When representing quantum states by density operators, the evident …

Witnessing quantum memory in non-Markovian processes

C Giarmatzi, F Costa - Quantum, 2021 - quantum-journal.org
We present a method to detect quantum memory in a non-Markovian process. We call a
process Markovian when the environment does not provide a memory that retains …

Entropic bounds on information backflow

N Megier, A Smirne, B Vacchini - Physical Review Letters, 2021 - APS
In the dynamics of open quantum systems, the backflow of information to the reduced system
under study has been suggested as the actual physical mechanism inducing memory and …

Characterizing (non-) Markovianity through Fisher information

P Abiuso, M Scandi, D De Santis, J Surace - SciPost Physics, 2023 - scipost.org
A non-isolated physical system typically loses information to its environment, and when such
loss is irreversible the evolution is said to be Markovian. Non-Markovian effects are studied …

[PDF][PDF] Information revival without backflow: non-causal explanations of non-Markovianity

F Buscemi, R Gangwar, K Goswami… - arxiv preprint arxiv …, 2024 - researchgate.net
The study of information revivals, witnessing the violation of certain data-processing
inequalities, has provided an important paradigm in the study of non-Markovian processes …

Holevo skew divergence for the characterization of information backflow

A Smirne, N Megier, B Vacchini - Physical Review A, 2022 - APS
The interpretation of non-Markovian effects as due to the information exchange between an
open quantum system and its environment has been recently formulated in terms of properly …

Adapted projection operator technique for the treatment of initial correlations

A Trevisan, A Smirne, N Megier, B Vacchini - Physical Review A, 2021 - APS
Standard theoretical descriptions of the dynamics of open quantum systems rely on the
assumption that the correlations with the environment can be neglected at some reference …

Equivalence between non-Markovian dynamics and correlation backflows

D De Santis, M Johansson - New Journal of Physics, 2020 - iopscience.iop.org
The information encoded into an open quantum system that evolves under a Markovian
dynamics is always monotonically non-increasing. Nonetheless, for a given quantifier of the …

Efficient and operational quantifier of nondivisibility in terms of channel discrimination

R Nery, NK Bernardes, D Cavalcanti, R Chaves… - Physical Review A, 2025 - APS
The understanding of open quantum systems is crucial for the development of quantum
technologies. Of particular relevance is the characterization of divisible quantum dynamics …

Information revival without backflow: non-causal explanations for non-Markovian quantum stochastic processes

F Buscemi, R Gangwar, K Goswami, H Badhani… - arxiv preprint arxiv …, 2024 - arxiv.org
The study of information revivals, witnessing the violation of certain data-processing
inequalities, has provided an important paradigm in the study of non-Markovian quantum …