Generalized quantum fluctuation theorem for energy exchange

W Wu, JH An - Physical Review Letters, 2024 - APS
The nonequilibrium fluctuation relation is a cornerstone of quantum thermodynamics. It is
widely believed that the system-bath heat exchange obeys the famous Jarzynski-Wójcik …

Quantum mechanics of open systems: Dissipaton theories

Y Wang, YJ Yan - The Journal of Chemical Physics, 2022 - pubs.aip.org
This Perspective presents a comprehensive account of the dissipaton theories developed in
our group since 2014, including the physical picture of dissipatons and the phase–space …

Classical and quantum thermodynamics in a non-equilibrium regime: Application to thermostatic Stirling engine

S Koyanagi, Y Tanimura - The Journal of Chemical Physics, 2024 - pubs.aip.org
We have developed a thermodynamic theory in the non-equilibrium regime, which we
describe as a thermodynamic system–bath model [Koyanagi and Tanimura, J. Chem. Phys …

Thermodynamic quantum Fokker–Planck equations and their application to thermostatic Stirling engine

S Koyanagi, Y Tanimura - The Journal of Chemical Physics, 2024 - pubs.aip.org
We developed a computer code for the thermodynamic quantum Fokker–Planck equations
(T-QFPE), derived from a thermodynamic system–bath model. This model consists of an …

Dissipatons as generalized Brownian particles for open quantum systems: Dissipaton-embedded quantum master equation

X Li, Y Su, ZH Chen, Y Wang, RX Xu… - The Journal of …, 2023 - pubs.aip.org
Dissipaton theory had been proposed as an exact, nonperturbative approach to deal with
open quantum system dynamics, where the influence of the Gaussian environment is …

Learning coherences from nonequilibrium fluctuations in a quantum heat engine

MJ Sarmah, HP Goswami - Physica A: Statistical Mechanics and its …, 2023 - Elsevier
We develop an efficient machine learning protocol to predict the noise-induced coherence
from the nonequilibrium fluctuations of photon exchange statistics in a quantum heat engine …

Generalized Fluctuation Theorem for Quantum Heat

W Wu, JH An - arxiv preprint arxiv:2401.15533, 2024 - arxiv.org
Nonequilibrium fluctuation relation is a cornerstone of quantum thermodynamics. It is widely
believed that the system-bath heat exchange obeys the famous Jarzynski-W\'{o} jcik …

Multimode Brownian oscillators: Exact solutions to heat transport

XH Tong, H Gong, Y Wang, RX Xu… - The Journal of Chemical …, 2023 - pubs.aip.org
In this work, we investigate the multimode Brownian oscillators in nonequilibrium scenarios
with multiple reservoirs at different temperatures. For this purpose, an algebraic method is …

Classical and quantum thermodynamics described as a system–bath model: The dimensionless minimum work principle

S Koyanagi, Y Tanimura - The Journal of Chemical Physics, 2024 - pubs.aip.org
We formulate a thermodynamic theory applicable to both classical and quantum systems.
These systems are depicted as thermodynamic system–bath models capable of handling …

Open quantum systems with nonlinear environmental backactions: Extended dissipaton theory vs core-system hierarchy construction

ZH Chen, Y Wang, RX Xu, YJ Yan - The Journal of Chemical Physics, 2023 - pubs.aip.org
In this paper, we present a comprehensive account of quantum dissipation theories with the
quadratic environment couplings. The theoretical development includes the Brownian …