Generalized quantum master equation: A tutorial review and recent advances

D Brian, X Sun - Chinese Journal of Chemical Physics, 2021 - pubs.aip.org
The generalized quantum master equation (GQME) provides a general and exact approach
for simulating the reduced dynamics in open quantum systems where a quantum system is …

Local disclosure of quantum memory in non-Markovian dynamics

C Bäcker, K Beyer, WT Strunz - Physical Review Letters, 2024 - APS
Non-Markovian processes may arise in physics due to memory effects of environmental
degrees of freedom. For quantum non-Markovianity, it is an ongoing debate to clarify …

Quantum and classical contributions to entropy production in fermionic and bosonic gaussian systems

K Ptaszyński, M Esposito - PRX Quantum, 2023 - APS
As previously demonstrated, the entropy production—a key quantity characterizing the
irreversibility of thermodynamic processes—is related to generation of correlations between …

Ensemble dependence of information-theoretic contributions to the entropy production

K Ptaszyński, M Esposito - Physical Review E, 2023 - APS
The entropy production of an open system coupled to a reservoir initialized in a canonical
state can be expressed as a sum of two microscopic information-theoretic contributions: the …

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 …

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 …

Quantum regression theorem for multi-time correlators: A detailed analysis in the Heisenberg picture

S Khan, BK Agarwalla, S Jain - Physical Review A, 2022 - APS
The quantum regression theorem is one of the central results in open quantum systems and
is extensively used for computing multi-point correlation functions. Traditionally it is derived …

System-bath entanglement of noninteracting fermionic impurities: Equilibrium, transient, and steady-state regimes

K Ptaszyński, M Esposito - Physical Review B, 2024 - APS
We investigate the behavior of entanglement between a single fermionic level and a
fermionic bath in three distinct thermodynamic regimes. First, in thermal equilibrium, we …

System-bath entanglement during Markovian relaxation of a fermionic impurity

K Ptaszynski, M Esposito - arXiv preprint arXiv:2306.08626, 2023 - arxiv.org
We investigate the dynamics of entanglement between the system and the environment
during thermalization of a noninteracting fermionic impurity coupled to a fermionic thermal …

Memory effects in quantum dynamics modelled by quantum renewal processes

N Megier, M Ponzi, A Smirne, B Vacchini - Entropy, 2021 - mdpi.com
Simple, controllable models play an important role in learning how to manipulate and control
quantum resources. We focus here on quantum non-Markovianity and model the evolution …