Generalized quantum master equation: A tutorial review and recent advances
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 …
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 …
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 …
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 …
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
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 …
of its environment play in characterising the ensuing dynamics. We employ a dephasing …
Adapted projection operator technique for the treatment of initial correlations
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 …
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 …
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 …
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 …
during thermalization of a noninteracting fermionic impurity coupled to a fermionic thermal …
Memory effects in quantum dynamics modelled by quantum renewal processes
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 …
quantum resources. We focus here on quantum non-Markovianity and model the evolution …