Divisibility of quantum dynamical maps and collision models

SN Filippov, J Piilo, S Maniscalco, M Ziman - Physical Review A, 2017 - APS
The divisibility of dynamical maps is visualized by trajectories in the parameter space and
analyzed within the framework of collision models. We introduce ultimate completely positive …

Unifying quantum heat transfer in a nonequilibrium spin-boson model with full counting statistics

C Wang, J Ren, J Cao - Physical Review A, 2017 - APS
To study the full counting statistics of quantum heat transfer in a driven nonequilibrium spin-
boson model, we develop a generalized nonequilibrium polaron-transformed Redfield …

Impact of non-Markovian quantum Brownian motion on quantum batteries

G Bhanja, D Tiwari, S Banerjee - Physical Review A, 2024 - APS
Recently, there has been an upsurge of interest in quantum thermodynamic devices, notably
quantum batteries. Quantum batteries serve as energy storage devices governed by the …

Refined weak-coupling limit: Coherence, entanglement, and non-Markovianity

Á Rivas - Physical Review A, 2017 - APS
We study the properties of a refined weak-coupling limit that preserves complete positivity in
order to describe non-Markovian dynamics in the spin-boson model. With this tool, we show …

Effectiveness of the Krotov method in finding controls for open quantum systems

MEF Fernandes, FF Fanchini, EF de Lima… - Journal of Physics A …, 2023 - iopscience.iop.org
We apply the Krotov method (KM) for open and closed quantum systems to find optimized
controls to manipulate qubit/qutrit systems in the presence of the external environment. In …

Five approaches to exact open-system dynamics: Complete positivity, divisibility, and time-dependent observables

V Reimer, MR Wegewijs, K Nestmann… - The Journal of …, 2019 - pubs.aip.org
To extend the classical concept of Markovianity to an open quantum system, different
notions of the divisibility of its dynamics have been introduced. Here, we analyze this issue …

Momentum coupling in non-Markovian quantum Brownian motion

L Ferialdi, A Smirne - Physical Review A, 2017 - APS
We consider a model of non-Markovian quantum Brownian motion that consists of a
harmonic oscillator bilinearly coupled to a thermal bath, both via its position and via its …

Quantum dissipation with conditional wave functions: Application to the realistic simulation of nanoscale electron devices

E Colomés, Z Zhan, D Marian, X Oriols - Physical Review B, 2017 - APS
Without access to the full quantum state, modeling dissipation in an open system requires
approximations. The physical soundness of such approximations relies on using realistic …

Continuous-variable quantum sensing of a dissipative reservoir

YD Sha, W Wu - Physical Review Research, 2022 - APS
We propose a continuous-variable quantum sensing scheme, in which a harmonic oscillator
is employed as the probe to estimate the parameters in the spectral density of a quantum …

Dissipative systems fractionally coupled to a bath

A Vertessen, RC Verstraten… - … Interdisciplinary Journal of …, 2024 - pubs.aip.org
Quantum diffusion is a major topic in condensed-matter physics, and the Caldeira–Leggett
model has been one of the most successful approaches to study this phenomenon. Here, we …