Results 51 to 60 of about 25,328,161 (248)

Nonlinear dynamics of open quantum systems

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
The evolution of a composite closed system using the integral wave equation with the kernel in the form of path integral is considered. It is supposed that a quantum particle is a subsystem of this system.
Alexey Yu Samarin
doaj   +1 more source

Thermodynamic length in open quantum systems [PDF]

open access: yesQuantum, 2019
The dissipation generated during a quasistatic thermodynamic process can be characterised by introducing a metric on the space of Gibbs states, in such a way that minimally-dissipating protocols correspond to geodesic trajectories.
Matteo Scandi, Martí Perarnau-Llobet
doaj   +1 more source

Modulating thermal robustness and entanglement distribution in a two-dimensional dissipative spin system using impurities

open access: yesResults in Physics, 2022
We consider a finite two-dimensional Heisenberg triangular spin lattice coupled to a dissipative Markovian environment at finite temperature in the presence of an external uniform magnetic field.
Gehad Sadiek, Maryam AlQasimi
doaj   +1 more source

In situ upgrade of quantum simulators to universal computers [PDF]

open access: yes, 2018
Quantum simulators, machines that can replicate the dynamics of quantum systems, are being built as useful devices and are seen as a stepping stone to universal quantum computers.
Benjamin Dive   +7 more
core   +1 more source

Hamiltonian assignment for open quantum systems

open access: yesPhysical Review Research, 2020
We investigate the problem of determining the Hamiltonian of a locally interacting open quantum system. To do so, we construct Hamiltonian estimators based on inverting a set of stationary, or dynamical, Heisenberg-Langevin equations of motion which rely
Eugene F. Dumitrescu, Pavel Lougovski
doaj   +1 more source

Embedding the Yang-Lee quantum criticality in open quantum systems

open access: yesPhysical Review Research, 2022
The Yang-Lee edge singularity is a quintessential nonunitary critical phenomenon characterized by anomalous scaling. However, an imaginary magnetic field involved in this phenomenon makes its physical implementation nontrivial.
Norifumi Matsumoto   +2 more
doaj   +1 more source

Thermalization in open quantum systems

open access: yesPhysical Review B, 2018
11 pages, 10 ...
Reichental, Israel   +3 more
openaire   +3 more sources

UNCERTAINTY RELATION FOR A QUANTUM OPEN SYSTEM [PDF]

open access: yesInternational Journal of Modern Physics A, 1995
We derive the uncertainty relation for a quantum open system consisting of a Brownian particle interacting with a bath of quantum oscillators at finite temperature. We examine how the quantum and thermal fluctuations of the environment contribute to the uncertainty in the canonical variables of the system.
Hu, B. L., Zhang, Yuhong
openaire   +2 more sources

Open systems, quantum probability and logic for quantum-like modeling in biology, cognition, and decision making [PDF]

open access: yes, 2023
The aim of this review is to highlight the possibility to apply the mathematical formalism and methodology of quantum theory to model behaviour of complex biosystems, from genomes and proteins to animals, humans, ecological and social systems.
Khrennikov, Andrei   +2 more
core   +1 more source

Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches

open access: yesEntropy, 2022
Quantum memory effects can be qualitatively understood as a consequence of an environment-to-system backflow of information. Here, we analyze and compare how this concept is interpreted and implemented in different approaches to quantum non-Markovianity.
Adrián A. Budini
doaj   +1 more source

Home - About - Disclaimer - Privacy