Effect of the size of environment on the steady-state entanglement and coherence via collision model

Li, Xiao‐Ming; Man, Zhong‐Xiao; Xia, Yun‐Jie

doi:10.1140/epjp/s13360-023-03665-3

Cited by 2 publications

(2 citation statements)

References 75 publications

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“…Some interesting and charming work on different modified theories of gravities can be seen in refs. [58][59][60][61][62][63][64][65][66][67] Skripkin's model, proposed in 1960 by Skripkin, [68] was the first known model that satisfied the conditions of zero expansion and non-dissipative arrangement of a compact fluid with constant energy density. This study focused on the evolution of compact fluid following a central explosion and indicated that the center of the fluid distribution should be surrounded by a Minkowskian cavity.…”

Section: Introductionmentioning

confidence: 99%

Dynamically Charged Spheres and their Stability in Einstein‐Gauss‐Bonnet Gravity

ur Rehman,

ul Haq Bhatti,

Yousaf

2024

Fortschritte der Physik

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Electrically charged anisotropic fluid spheres with vanishing expansion scalar condition under the influence of a newly established gravitational scheme are investigated in this study, i.e., Einstein‐Gauss‐Bonnet (EGB) gravity. Glavan and Lin introduced this framework, in which they rescaled the coupling factor α using and derived the gravitational field equations. The work of Herrera et al. is extended to explore the dynamical instability of charged spherically symmetric matter distribution in the context of EGB gravity. In this respect, dynamical equations, conservation equations, and junction conditions for charged sphere are computed. To study the evolution of considered system in the Newtonian and post‐Newtonian regimes against an expansion‐free background, several substantial restrictions are imposed employing a perturbation approach. This study showed that the adiabatic index (Γ) has no effect on the instability ranges in the aforementioned approximations. It is analyzed that the determination of these ranges solely attributed to the anisotropy of fluid surface pressures, radial profile, EGB factors, and charged intensity parameters along with the radial distribution of energy density.

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Section: Introductionmentioning

confidence: 99%

Dynamically Charged Spheres and their Stability in Einstein‐Gauss‐Bonnet Gravity

ur Rehman,

ul Haq Bhatti,

Yousaf

2024

Fortschritte der Physik

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“…Hence, exploring effective and practical schemes for entanglement generation, improvement, and protection in open quantum systems is important for applying quantum entanglement and developing quantum technology. In recent decades, numerous protocols [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] have been proposed to generate and enhance quantum entanglement. For example, in refs.…”

Section: Introductionmentioning

confidence: 99%

Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

Man

Xia

2023

Adv Quantum Tech

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The effect of environmental coherence on bipartite and tripartite quantum entanglements using quantum collision models is studied. In the collision model, an open quantum system of two qubits indirectly interacts with the reservoir via auxiliary qubits. The reservoir is modeled as a collection of initially uncorrelated qubits prepared in an identically nonthermal state. It is shown that the coherence of the nonthermal reservoir contributes to the generation and protection of entanglement. It is found that adding coherence to the initial state of the reservoir qubit can significantly enhance the steady-state entanglement of the system, and the presence of coherence in the reservoir allows steady-state entanglement to be obtained in a higher temperature region.

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Effect of the size of environment on the steady-state entanglement and coherence via collision model

Cited by 2 publications

References 75 publications

Dynamically Charged Spheres and their Stability in Einstein‐Gauss‐Bonnet Gravity

Dynamically Charged Spheres and their Stability in Einstein‐Gauss‐Bonnet Gravity

Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

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