Results 21 to 30 of about 58,975 (287)

Dissipation-induced Liouville-Majorana modes in open quantum system

open access: yesPhysical Review Research, 2023
In open quantum systems, topological edge states rapidly lose coherence, making them unsuitable for topological quantum computation and quantum memory.
Xing-Shuo Xu   +3 more
doaj   +1 more source

Bayesian quantum parameter estimation with Gaussian states and homodyne measurements in a dissipative environment

open access: yesResults in Physics, 2023
The deterioration of precision caused by quantum decoherence in dissipative environments is a longstanding problem in the development of quantum metrology.
Jie Tang   +7 more
doaj   +1 more source

Stable iPEPO Tensor-Network Algorithm for Dynamics of Two-Dimensional Open Quantum Lattice Models

open access: yesPhysical Review X, 2021
Being able to accurately describe the dynamics steady states of driven and/or dissipative but quantum correlated lattice models is of fundamental importance in many areas of science: from quantum information to biology.
C. Mc Keever, M. H. Szymańska
doaj   +1 more source

Quantum dissipative adaptation

open access: yesCommunications Physics, 2021
Dissipative adaptation is a general thermodynamic mechanism that explains self-organization in classical systems via dissipation of absorbed work, revealing a principle of life-like behaviour.
Daniel Valente   +2 more
doaj   +1 more source

High fidelity quantum gates of trapped ions in the presence of motional heating

open access: yesNew Journal of Physics, 2016
We describe entangling quantum gates for trapped ions mediated by a dissipative bus mode and show that suitably designed, polychromatic control pulses decrease ion-phonon entanglement substantially while maintaining the mediated interaction.
Farhang Haddadfarshi, Florian Mintert
doaj   +1 more source

Scattering Theory for Open Quantum Systems [PDF]

open access: yes, 2006
Quantum systems which interact with their environment are often modeled by maximal dissipative operators or so-called Pseudo-Hamiltonians. In this paper the scattering theory for such open systems is considered.
Behrndt, J.   +2 more
core   +2 more sources

Parametrically driving a quantum oscillator into exceptionality

open access: yesScientific Reports, 2023
The mathematical objects employed in physical theories do not always behave well. Einstein’s theory of space and time allows for spacetime singularities and Van Hove singularities arise in condensed matter physics, while intensity, phase and polarization
C. A. Downing, A. Vidiella-Barranco
doaj   +1 more source

Quantum correlations and limit cycles in the driven-dissipative Heisenberg lattice

open access: yesNew Journal of Physics, 2018
Driven-dissipative quantum many-body systems have attracted increasing interest in recent years as they lead to novel classes of quantum many-body phenomena.
E T Owen   +4 more
doaj   +1 more source

Void formation in operator growth, entanglement, and unitarity

open access: yesJournal of High Energy Physics, 2021
The structure of the Heisenberg evolution of operators plays a key role in explaining diverse processes in quantum many-body systems. In this paper, we discuss a new universal feature of operator evolution: an operator can develop a void during its ...
Hong Liu, Shreya Vardhan
doaj   +1 more source

Exact closed master equation for Gaussian non-Markovian dynamics [PDF]

open access: yes, 2016
Non-Markovian master equations describe general open quantum systems when no approximation is made. We provide the exact closed master equation for the class of Gaussian, completely positive, trace preserving, non-Markovian dynamics.
Ferialdi, L.
core   +2 more sources

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