Results 11 to 20 of about 853 (152)

Harnessing quantum entanglement and heat current of a non-equilibrium spin system at high temperatures [PDF]

open access: yesScientific Reports
The challenge of harnessing entanglement during the non-equilibrium dynamics of open quantum systems, especially at high temperatures, is highly prominent within recent scientific researches. Due to the ongoing trend of miniaturization of quantum devices
B. Mojaveri, Z. Ahmadi
doaj   +2 more sources

The Retarding Effect of Noise on Entanglement Sudden Death

open access: yesReports on Mathematical Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +2 more sources

Universality of sudden death of entanglement [PDF]

open access: yesQuantum Information and Computation, 2011
We present a constructive argument to demonstrate the universality of the sudden death of entanglement in the case of two non-interacting qubits, each of which generically coupled to independent Markovian environments at zero temperature. Conditions for the occurrence of the abrupt disappearance of entanglement are determined and, most importantly ...
Felipe F. Fanchini   +2 more
openaire   +2 more sources

Two-Qubit Local Fisher Information Correlation beyond Entanglement in a Nonlinear Generalized Cavity with an Intrinsic Decoherence

open access: yesEntropy, 2021
In this paper, we study a Hamiltonian system constituted by two coupled two-level atoms (qubits) interacting with a nonlinear generalized cavity field. The nonclassical two-qubit correlation dynamics are investigated using Bures distance entanglement and
A.-B. A. Mohamed   +3 more
doaj   +1 more source

A study on the sudden death of entanglement [PDF]

open access: yesPhysics Letters A, 2007
The dynamics of entanglement and the phenomenon of entanglement sudden death (ESD) \cite{yu} are discussed in bipartite systems, measured by Wootters Concurrence. Our calculation shows that ESD appears whenever the system is open or closed and is dependent on the initial condition.
Cui, H. T., Li, K., Yi, X. X.
openaire   +3 more sources

Entanglement-breaking channels and entanglement sudden death [PDF]

open access: yesPhysical Review A, 2016
The occurrence of entanglement sudden death in the evolution of a bipartite system depends on both the initial state and the channel responsible for the evolution. An extreme case is that of entanglement braking channels, which are channels that acting on only one of the subsystems drives them to full disentanglement regardless of the initial state. In
Knoll, Laura Tamara   +4 more
openaire   +3 more sources

Influence of detuning and Kerr nonlinearity on atom-atom entanglement in the double two-photon Jaynes–Cummings model

open access: yesФизика волновых процессов и радиотехнические системы, 2021
In this work, the authors investigated the dynamics of entanglement of two identical two-level atoms (qubits) in the framework of the two-photon double Jaynes–Cummings model, taking into account the detuning between atoms and the double frequency of the ...
Rodion K. Zakharov, Evgeny K. Bashkirov
doaj   +1 more source

Sudden death of effective entanglement [PDF]

open access: yesPhysical Review A, 2010
Sudden death of entanglement is a well-known effect resulting from the finite volume of separable states. We study the case when the observer has a limited measurement capability and analyse the effective entanglement, i.e. entanglement minimized over the output data.
Katarzyna Roszak   +2 more
openaire   +3 more sources

Evidence for unexpected robustness of multipartite entanglement against sudden death from spontaneous emission

open access: yesPhysical Review Research, 2023
Entanglement is known to decay even in isolated systems, an effect attributed to spontaneous emission. This fragility of entanglement can be exacerbated by entanglement sudden death (ESD), where entanglement drops to zero abruptly within a finite time ...
Songbo Xie   +2 more
doaj   +1 more source

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