Pairwise quantum correlations in four-level quantum dot systems

Abaach, Sanaa; Baz, M. El; Faqir, Mustapha

doi:10.1016/j.physleta.2021.127140

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…Therefore, the creation and distribution of entanglement in physical platforms is crucial in the success and implementation of quantum teleportation protocols 7 . In this context, a variety of one-dimensional quantum spin chains are known for their entangled ground states and have been intensively investigated as faithful architectures for quantum information processing [8][9][10][11][12][13][14][15] and notably as reliable quantum channels for teleportation protocols [16][17][18][19][20][21][22][23][24][25][26] . Nevertheless, in most one-dimensional quantum spin chain systems with short-range interactions, the entanglement vanishes for distances larger than two neighboring sites [27][28][29] , which makes them inconceivable platforms for long distance teleportation.…”

Section: Long Distance Entanglement and High-dimensional Quantum Tele...mentioning

confidence: 99%

Long distance entanglement and high-dimensional quantum teleportation in the Fermi–Hubbard model

Abaach

Mzaouali

Baz

2023

Sci Rep

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The long distance entanglement in finite size open Fermi–Hubbard chains, together with the end-to-end quantum teleportation are investigated. We show the peculiarity of the ground state of the Fermi–Hubbard model to support maximum long distance entanglement, which allows it to operate as a quantum resource for high fidelity long distance quantum teleportation. We determine the physical properties and conditions for creating scalable long distance entanglement and analyze its stability under the effect of the Coulomb interaction and the hopping amplitude. Furthermore, we show that the choice of the measurement basis in the protocol can drastically affect the fidelity of quantum teleportation and we argue that perfect information transfer can be attained by choosing an adequate basis reflecting the salient properties of the quantum channel, i.e. Hubbard projective measurements.

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Section: Long Distance Entanglement and High-dimensional Quantum Tele...mentioning

confidence: 99%

Long distance entanglement and high-dimensional quantum teleportation in the Fermi–Hubbard model

Abaach

Mzaouali

Baz

2023

Sci Rep

Self Cite

View full text Add to dashboard Cite

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Design space of quantum dot spin qubits

Rassekh

Shalchian

Sallèse

et al. 2023

Physica B: Condensed Matter

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Thermal quantum correlations and disorder in a fermionic system described by the extended Fermi–Hubbard-like model

Essakhi,

Mansour

2024

Laser Phys. Lett.

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This research investigates thermal quantum correlations in a fermionic system modeled using an extended Fermi–Hubbard-like model. We examine the impacts of noisy temperature, local chemical potential, and nearest-neighbor interaction. The Fermi–Hubbard model provides a framework for understanding fermion interactions in a lattice and shows potential for simulating fermionic systems with superconducting circuits in quantum simulation. Using the Jordan–Wigner transformation, we convert the fermionic system into a qubit system, bridging quantum information and particle physics. Thermal entanglement is assessed using concurrence measurement, while thermal quantum correlations are measured through trace distance discord and local quantum uncertainty. Our findings indicate that increasing temperature causes disorder, negatively affecting quantum entanglement and correlations. However, by adjusting the nearest-neighbor interaction strength and local potential, we can mitigate thermal noise effects, enhancing correlations and entanglement. Selecting appropriate parameters can ensure the system’s potential for quantum technology development.

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Pairwise quantum correlations in four-level quantum dot systems

Cited by 6 publications

References 31 publications

Long distance entanglement and high-dimensional quantum teleportation in the Fermi–Hubbard model

Long distance entanglement and high-dimensional quantum teleportation in the Fermi–Hubbard model

Design space of quantum dot spin qubits

Thermal quantum correlations and disorder in a fermionic system described by the extended Fermi–Hubbard-like model

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