Results 21 to 30 of about 943 (251)

The geometry of entanglement sudden death [PDF]

open access: yesNew Journal of Physics, 2007
6 pages, 2 figures, references added, initial paragraph corrected, sectioning adopted, some parts rewritten; accepted by New J ...
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

Two-qubit quantum nonlocality dynamics induced by interacting of two coupled superconducting flux qubits with a resonator under intrinsic decoherence

open access: yesAlexandria Engineering Journal, 2023
This paper explores the dynamics of two spatially separated superconducting flux qubits, initially in a maximally correlated state, without mutual interaction.
A.-B.A. Mohamed   +3 more
doaj   +1 more source

Entanglement in nonlinear two-qibit Tavis — Cummings model

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
In this work, we have studied the dynamics of entanglement of two identical superconducting qubits resonantly interacting with the one-mode field of a coplanar microwave cavity without loss through single-photon transitions in the presence of third- and ...
Rodion K. Zakharov, Eugene K. Bashkirov
doaj   +1 more source

Entanglement Research for the Coupled Superconducting Phase Qubit and a Two-Level System

open access: yesAdvances in Condensed Matter Physics, 2020
Entanglement can exist not only in the microscopic system (e.g., atom, photon, and ion trap) but also in macroscopic systems. According to recent research, entanglement can be achieved and controlled in superconducting devices.
Jianxin Shi
doaj   +1 more source

Quantum Correlation Dynamics in Controlled Two-Coupled-Qubit Systems

open access: yesEntropy, 2020
We study and compare the time evolutions of concurrence and quantum discord in a driven system of two interacting qubits prepared in a generic Werner state.
Iulia Ghiu   +4 more
doaj   +1 more source

Dynamics of entanglement of atoms with two-photon transitions induced by a thermal field [PDF]

open access: yesКомпьютерная оптика, 2020
In this paper, we investigate the entanglement between two two-level atoms non-resonantly in-teracting with a thermal field of a lossless one-mode resonator via degenerate two-photon transi-tions.
Eugene Bashkirov
doaj   +1 more source

Entanglement between two superconducting garge qubits

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
In this paper, we investigated the dynamics of entanglement of two identical charge qubits with Josephson junctions in the case when one of the qubits is exposed to a microwave field in a coherent or thermal state. We have found the exact solution of the
Eugene K. Bashkirov
doaj   +1 more source

Dynamics of Entanglement in Jaynes–Cummings Nodes with Nonidentical Qubit-Field Coupling Strengths

open access: yesEntropy, 2017
How to analytically deal with the general entanglement dynamics of separate Jaynes–Cummings nodes with continuous-variable fields is still an open question, and few analytical approaches can be used to solve their general entanglement dynamics ...
Li-Tuo Shen   +3 more
doaj   +1 more source

Effect of random telegraph noise on entanglement and nonlocality of a qubit-qutrit system [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2017
We study the evolution of entanglement and nonlocality of a non-interacting qubit-qutrit system under the effect of random telegraph noise (RTN) in independent and common environments in Markovian and non-Markovian regimes.
Hakimeh Jaghouri, Samira Nazifkar
doaj   +1 more source

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