Entropic and trace-distance-based measures of non-Markovianity

F Settimo, HP Breuer, B Vacchini - Physical Review A, 2022 - APS
We analyze and compare different measures for the degree of non-Markovianity in the
dynamics of open quantum systems. These measures are based on the distinguishability of …

Correlations, information backflow, and objectivity in a class of pure dephasing models

N Megier, A Smirne, S Campbell, B Vacchini - Entropy, 2022 - mdpi.com
We critically examine the role that correlations established between a system and fragments
of its environment play in characterising the ensuing dynamics. We employ a dephasing …

Comparison of distances and entropic distinguishability quantifiers for the detection of memory effects

B Vacchini - arXiv preprint arXiv:2402.17419, 2024 - arxiv.org
We consider a recently introduced framework for the description of memory effects based on
quantum state distinguishability quantifiers, in which entropic quantifiers can be included …

Memory effects in multipartite systems coupled by nondiagonal dephasing mechanisms

AA Budini - Physical Review A, 2023 - APS
The developing of (non-Markovian) memory effects strongly depends on the underlying
system-environment dynamics. Here we study this problem in multipartite arrangements …

Phase space measures of information flow in open systems: A quantum and classical perspective of non-Markovianity

MF Richter, HP Breuer - arXiv preprint arXiv:2409.08749, 2024 - arxiv.org
The exchange of information between an open quantum system and its environment,
especially the backflow of information from the environment to the open system associated …

Decoherence due to Casimir effect?

A Gundhi - arXiv preprint arXiv:2409.03866, 2024 - arxiv.org
Open system dynamics of an electron is studied in the presence of radiation field, confined
between two parallel conducting pates. It has been suggested in previous works that the …

Quantum vs. classical -divisibility

F Benatti, G Nichele, D Chruściński - arXiv preprint arXiv:2405.05794, 2024 - arxiv.org
$ P $-divisibility is a central concept in both classical and quantum non-Markovian
processes; in particular, it is strictly related to the notion of information backflow. When …

Recovery with incomplete knowledge: Fundamental bounds on real-time quantum memories

A Danageozian - Quantum, 2023 - quantum-journal.org
The recovery of fragile quantum states from decoherence is the basis of building a quantum
memory, with applications ranging from quantum communications to quantum computing …

Adaptive Quantum Information Processing in Non-Equilibrium Environments

A Danageozian - 2023 - search.proquest.com
Solid state and condensed matter systems, such as diamond impurities, superconductors,
quantum dots, and ion traps, constitute important physical platforms for various applications …

Different distinguishability quantifiers for quantum non-Markovianity

N Megier - … DELLA SOCIETA ITALIANA DI FISICA C …, 2022 - repozytorium.bg.ug.edu.pl
In this note, the definitions of quantum non-Markovianity based on the monotonicity of
distinguishability quantifiers between two evolving quantum states are discussed. In …