Thermal Effect on Quantum Correlations of Two Interacting Qubits in Graphene Lattices

Mhamdi, H.; Jebli, L.; Habiballah, Nabil; Nassik, Mostafa

doi:10.1007/s10773-022-05212-9

Cited by 9 publications

(3 citation statements)

References 43 publications

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“…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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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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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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“…Due to its unique properties, such as intrinsic ferromagnetism [52,53] and exceptional electronic and optical characteristics, graphene holds significant potential for various fascinating applications, including quantum communication [54], quantum teleportation [55], and quantum computing [56]. Numerous studies have explored the dynamics of quantum entanglement in graphene layer systems (see, for instance, [57][58][59]). The electronic excitations in graphene are governed by chiral and massless Dirac fermions, which, under the influence of magnetic fields, exhibit quantum electrodynamic properties leading to extraordinary physical phenomena [60,61].…”

Section: Introductionmentioning

confidence: 99%

Quantum interferometric power versus quantum correlations in a graphene layer system with a scattering process under thermal noise

Bouafia,

Mansour

2023

Laser Phys. Lett.

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Cutting-edge quantum processing technology is currently exploring the remarkable electronic properties of graphene layers, such as their high mobility and thermal conductivity. Our research is dedicated to investigating the behavior of quantum resources within a graphene layer system with a scattering process, specifically focusing on quantum interferometric power (QIP) and quantum correlations, while taking into account the influence of thermal noise. To quantify these correlations, we employ measures like local quantum uncertainty (LQU) and logarithmic negativity (LN). We examine how factors like temperature, inter-valley scattering processes strength, and other system parameters affect both QIP and quantum correlations. Our results reveal that higher temperatures lead to a reduction in QIP and non-classical correlations within graphene layers. Moreover, it is noteworthy that QIP and LQU respond similarly to changes in temperature, whereas LN is more sensitive to these variations. By optimizing system parameters such as band parameter, wavenumber operators and scattering processes strength, we can mitigate the impact of thermal noise and enhance the quantum advantages of graphene-based quantum processing

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Thermal Effect on Quantum Correlations of Two Interacting Qubits in Graphene Lattices

Cited by 9 publications

References 43 publications

Nonclassical correlations in two-dimensional graphene lattices

Nonclassical correlations in two-dimensional graphene lattices

Thermal quantum correlations and teleportation in a graphene sheet

Quantum interferometric power versus quantum correlations in a graphene layer system with a scattering process under thermal noise

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