Restrain the losses of the entanglement and the non-local advantage of quantum coherence for accelerated quantum systems

Mohammed, Amena Rezk; El-Shahat, T. M.; Metwally, N.

doi:10.1016/j.ijleo.2020.165190

Cited by 6 publications

(2 citation statements)

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“…• Non-local advantage For a two-qubit state ρ AB , based on local measurements on subsystem A and classical communication between the bipartite, the nonlocal advantage of quantum coherence (NAQC) [15] can be attained by the conditional state of subsystem B. The one norm coherence C na1 l 1 is defined as,…”

Section: • Three Nodes Entanglement:tanglementioning

confidence: 99%

Generating multi-hops entangled network via spin Dipolar interaction

Mohammed,

El-Shahat,

Metwally

2020

Preprint

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The possibility of generating a multi-hops network between different entangled nodes (qubits) via spin Dipolar interaction is examined. The negativity, tangle and the non-local coherent advantage are used as quantifiers of the generated quantum correlations. The phenomena of the sudden death/birth is displayed for the entangled two nodes, while the sudden changes phenomena (increasing/ decreasing) is depicted for all entangled three nodes. The amount of correlations between the different nodes depend on the initial network settings, where the largest amount is predicted if the network is initially conducted via maximum entangled nodes. The generated quantum correlations between each three nodes are more robust than those generated between two nodes. For the generated entangled two nodes, the direction of the interaction and its strength have a remarkable effect on the correlation behavior, while they has a slightly effect on the correlation of the three nodes.

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Section: • Three Nodes Entanglement:tanglementioning

confidence: 99%

Generating multi-hops entangled network via spin Dipolar interaction

Mohammed,

El-Shahat,

Metwally

2020

Preprint

Self Cite

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“…The indisputable effect of the acceleration and relativity on quantum entanglement, which has attracted a lot of interest recently, [42][43][44][45][46][47][48][49] has sparked our curiosity about knowing the behavior of the tripartite uncertainty when the measured qubit is uniformly accelerated while the two quantum memories remain stationary. To do so, it must be taken into account that within the limits of infinite uniform acceleration the so-called Unruh effect emerges.…”

Section: Introductionmentioning

confidence: 99%

Tripartite Uncertainty, Quantum, and Classical Correlations Dynamics under Unruh Effect

2023

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How the dynamics of classical and quantum correlations due to the Unruh effect are reflected in the properties of tripartite entropic uncertainty is investigated. It is found that, despite the quantum correlations disappearing at the limit of infinite acceleration, the uncertainty about the measurement outcome is at its minimum. This is due to the three‐qubit system still containing classic correlations at that stage of acceleration. Additionally, the decrease in the entropic uncertainty when the measured qubit interacts strongly with the scalar field can be attributed to the increase in classical correlations. Furthermore, it is found that the entropic uncertainty is fully anti‐correlated to classical correlations, and minimal uncertainty can be obtained even in the absence of quantum correlations. A tremendously tight constraint that effectively defined the properties of tripartite entropic uncertainty based on the difference between the total correlation and the Holevo quantities is achieved.

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