Results 21 to 30 of about 128,075 (342)

Dissipation without resistance: Imaging impurities at quantum Hall edges

open access: yesPhysical Review Research, 2020
Motivated by a recent experiment [A. Marguerite et al., Nature (London) 575, 628 (2019)NATUAS0028-083610.1038/s41586-019-1704-3] on imaging in graphene samples, we investigate theoretically the dissipation induced by resonant impurities in the quantum ...
Gu Zhang   +2 more
doaj   +1 more source

Completely Positive Quantum Dissipation [PDF]

open access: yesPhysical Review Letters, 2000
A completely positive master equation describing quantum dissipation for a Brownian particle is derived starting from microphysical collisions, exploiting a recently introduced approach to subdynamics of a macrosystem. The obtained equation can be cast into Lindblad form with a single generator for each Cartesian direction.
openaire   +5 more sources

Quantum work statistics close to equilibrium

open access: yesPhysical Review Research, 2020
We study the statistics of work, dissipation, and entropy production of a quantum quasi-isothermal process, where the system remains close to thermal equilibrium along the transformation.
Matteo Scandi   +3 more
doaj   +1 more source

Velocity-dependent quantum phase slips in 1D atomic superfluids [PDF]

open access: yes, 2016
Quantum phase slips are the primary excitations in one-dimensional superfluids and superconductors at low temperatures but their existence in ultracold quantum gases has not been demonstrated yet.
Abbate, Simona Scaffidi   +7 more
core   +2 more sources

Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics

open access: yesPhysical Review X, 2023
Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive.
Yue Sun   +6 more
doaj   +1 more source

Macroscopic quantum dynamics of pi-junctions with ferromagnetic insulators [PDF]

open access: yes, 2006
We theoretically investigate the macroscopic quantum dynamics of a pi junction with a superconductor (S) and a multiferroic material or a ferromagnetic insulator (FI).
19317   +9 more
core   +4 more sources

Dynamics of Dissipative Quantum Hall Edges [PDF]

open access: yes, 2003
We examine the influence of the edge electronic density profile and of dissipation on edge magnetoplasmons in the quantum Hall regime, in a semiclassical calculation.
A. M. Chang   +26 more
core   +2 more sources

DISSIPATIVE QUANTUM DISORDERED MODELS [PDF]

open access: yesRecent Progress in Many-Body Theories, 2006
This article reviews recent studies of mean-field and one dimensional quantum disordered spin systems coupled to different types of dissipative environments. The main issues discussed are: (i) The real-time dynamics in the glassy phase and how they compare to the behaviour of the same models in their classical limit.
openaire   +3 more sources

Engineering tunable local loss in a synthetic lattice of momentum states

open access: yesNew Journal of Physics, 2019
Dissipation can serve as a powerful resource for controlling the behavior of open quantum systems. Recently there has been a surge of interest in the influence of dissipative coupling on large quantum systems and, more specifically, how these processes ...
Samantha Lapp   +3 more
doaj   +1 more source

Nonequilibrium steady states in the Floquet-Lindblad systems: van Vleck's high-frequency expansion approach

open access: yesSciPost Physics Core, 2021
Nonequilibrium steady states (NESSs) in periodically driven dissipative quantum systems are vital in Floquet engineering. We develop a general theory for high-frequency drives with Lindblad-type dissipation to characterize and analyze NESSs.
Tatsuhiko N. Ikeda, Koki Chinzei, Masahiro Sato
doaj   +1 more source

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