Non-local correlation dynamics in two-dimensional graphene

Mohamed, Abdel‐Baset A.; Abdel‐Aty, Abdel‐Haleem; Qasymeh, Montasir; Eleuch, Hichem

doi:10.1038/s41598-022-07204-5

Cited by 20 publications

(4 citation statements)

References 60 publications

(60 reference statements)

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“…Within the effective-mass approximation, the Hamiltonian around the Dirac points is given by [50,58,66]…”

Section: Y = S S S Smentioning

confidence: 99%

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Nonclassical correlations in two-dimensional graphene lattices

Wang

2024

Commun. Theor. Phys.

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We investigate the nonclassical correlations via negativity (N), local quantum uncertainty (LQU) and local quantum Fisher information (LQFI) for the two-dimensional Graphene lattices. The explicitly analytical expressions of the negativity, LQU and LQFI are given. The close forms of the LQU and LQFI confirm the inequality between the quantum Fisher information and skew information, where the LQFI is always greater than or equal to the LQU, and both of them show very similar behavior with different amplitudes. Moreover, the effects of the different system parameters on the quantified quantum correlation are analyzed. The LQFI reveals more nonclassical correlations than LQU in a two-dimensional Graphene lattice system.

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“…Within the effective-mass approximation, the Hamiltonian around the Dirac points is given by [50,58,66]…”

Section: Y = S S S Smentioning

confidence: 99%

“…Significant attention has also been given to the study of possible applications in graphene-based entanglement [50], quantum memory [51,52] and quantum teleportation [53]. Recently, many research works have studied the dynamics of entanglement in a graphene layer system [50,[54][55][56][57][58][59][60][61][62].…”

Section: Introductionmentioning

confidence: 99%

Nonclassical correlations in two-dimensional graphene lattices

Wang

2024

Commun. Theor. Phys.

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“…These interactions between two electrons can be studied using "tight binding" approximation [33,34]. Recently, the quantum correlations in graphene system have also been explored from different perspectives like intrinsic decoherence [35] and thermal effect [36].…”

Section: Introductionmentioning

confidence: 99%

Thermal quantum correlations and teleportation in a graphene sheet

Bhuvaneswari¹,

Muthuganesan

Radha³

2023

Appl. Phys. B

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The characterization of quantum resources in dynamical systems is one of the most important problems to be addressed in quantum information theory. In this article, we investigate the behaviors of quantum correlations and teleportation technique in a graphene sheet comprising of disordered electrons in a two-dimensional honeycomb lattice. We use three different measures of quantum correlations such as entanglement, measurement-induced nonlocality and uncertainty-induced nonlocality. We study the ground state properties of the graphene sheet from the perspective of quantum correlations. At thermal equilibrium, we show that the band parameter strengthens the quantum correlations whereas the scattering strength weakens the correlations. Finally, the impact of the system's parameters on the teleportation technique is also expounded.

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“…The intrinsic decoherence effects [6] are accounted for loss quantum correlations due to the dephasing effects that prevailed in the system without interaction with the external environment. In this regard, the intrinsic decoherence effects are simply based on the modification of the general unitary Schrödinger evolution [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of quantum-memory assisted entropic uncertainty of a two-spin Heisenberg XXX model under the intrinsic decoherence effect

Mohamed¹,

Rahman²,

Aldosari³

et al. 2023

Phys. Scr.

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In this study, the quantum-memory assisted entropic uncertainty (QM-EU) and entanglement dynamics of the two-qubit Heisenberg XXX chain have been explored in the presence of intrinsic decoherence. The effect of the x-component of Dzyaloshinskii-Moriya (DM) and Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA) interactions has been considered. The generation and preservation of quantum memory and entanglement have been examined for various values of the DM, KSEA, spin-spin, and spin coupling strengths. The uncertainty negatively affects the entanglement and both have anti-correlation. The absence and presence of intrinsic decoherence prevail in differing impacts on the dynamics of the system. In the first case, prolonged entanglement preservation, uncertainty suppression, and oscillatory dynamics have been observed. Moreover, in order to achieve the best-prolonged entanglement preservation and relative reduction of the entropic uncertainty, we have analyzed several parameter settings. We find that the effects of raising the DM, KSEA, and spin-spin interaction individually and simultaneously are different. The individual and simultaneous increase of the DM, KSEA, and spin-spin interaction parameters control the degree of entanglement, entropic uncertainty, and primarily the dynamics of the system.

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Non-local correlation dynamics in two-dimensional graphene

Cited by 20 publications

References 60 publications

Nonclassical correlations in two-dimensional graphene lattices

Nonclassical correlations in two-dimensional graphene lattices

Thermal quantum correlations and teleportation in a graphene sheet

Dynamics of quantum-memory assisted entropic uncertainty of a two-spin Heisenberg XXX model under the intrinsic decoherence effect

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