Correlation dynamics of nitrogen vacancy centers located in crystal cavities

Abdel‐Aty, Abdel‐Haleem; Kadry, Heba; Mohamed, A.-B.A.; Eleuch, Hichem

doi:10.1038/s41598-020-73697-7

Cited by 19 publications

(4 citation statements)

References 66 publications

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“…The maximal violation of the Bell’s inequality and the MBF nonlocal correlation have always occurred. The results show that the permanent presence of the Bell-function non-locality satisfies the hierarchy principle 55 – 57 , as illustrated by the results. The MBF nonlocal correlation implies entanglement concurrence, which in turn implies uncertainty-induced non-locality.…”

Section: Non-locality Dynamicsmentioning

confidence: 53%

“…Physically, all kinds of quantum correlations depend on physical parameters of the considered model and satisfy the hierarchy principle. The hierarchy principle 55 – 57 establishes a closer relationship between entanglement and Bell nonlocality. In this respect, all the quantum states have Bell nonlocality are entangled states, which is necessary but is not sufficient condition.…”

Section: Non-locality Quantifiersmentioning

confidence: 99%

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Non-local correlation dynamics in two-dimensional graphene

Mohamed

Abdel‐Aty

Qasymeh

et al. 2022

Sci Rep

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We explore the non-local correlation dynamics in a Graphene sheet of disordered electrons in a two-dimensional honeycomb lattice, containing two sublattices, induced by the interaction range of impurity potentials of two Dirac points. The Bell function, uncertainty-induced non-locality, and concurrence are used to investigate the formation and robustness of the non-local correlation between the honeycomb lattice and the Dirac point. The generated lattice-point non-local correlations are explored when the lattice-point system is initially in the uncorrelated state. Due to the lattice-point interaction, the resulting Bell-function non-locality and entanglement concurrence satisfy the hierarchy principle. The generated uncertainty-induced non-locality correlation has a higher degree of stability and robustness than the Bell non-locality and concurrence. We analyze the robustness of the initial maximal non-local correlations under the effects of the band parameter, the intravalley scattering processes, the wave numbers, and the intrinsic decoherence. The formation and stability of lattice-point correlations are highly dependent on the honeycomb lattice and Dirac point characteristics.

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Section: Non-locality Dynamicsmentioning

confidence: 53%

Section: Non-locality Quantifiersmentioning

confidence: 99%

Non-local correlation dynamics in two-dimensional graphene

Mohamed

Abdel‐Aty

Qasymeh

et al. 2022

Sci Rep

Self Cite

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“…This is consistent with the hierarchy principle. [ 27–29 ] The MBF entails L‐NE, which is necessary but insufficient. In the presence of the two‐magnon spontaneous emission and the electromagnetic‐wave dissipation, we find that the UIN grows to its maximal value

U(t)=1

.…”

Section: Dynamics Of Ncc Functionsmentioning

confidence: 99%

“…The violation of the Bell inequalities led to the conclusion that there is an entanglement phenomenon. [ 26 ] The hierarchy principle [ 27–29 ] establishes a closer relationship between entanglement and Bell nonlocality. In this respect, all the quantum states have Bell nonlocality are entangled states, which is necessarily and is not sufficiently.…”

Section: Introductionmentioning

confidence: 99%

Two‐Magnon Non‐Locality and Coherence Induced by an Open Microwave Cavity: Generation and Robustness

Mohamed

Eleuch

2022

Annalen der Physik

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The generation and robustness of two-magnon non-locality and coherence dynamics induced by an open microwave field cavity are investigated in this work. The studied system consists of a two-sublattice ferrimagnet coupled to a microwave field within an open cavity through its magnetic field component. The robustness of the two-magnons non-locality dynamics is analyzed using various non-locality and coherence measures (namely, uncertainty-induced non-locality [UIN], maximal Bell function, and log-negativity entanglement [L-NE]) in the presence of the spontaneous emission and the electromagnetic-wave dissipation. It is shown that photon-magnon couplings, two-magnon couplings, and dissipation all have an impact on the dynamical aspect of two-magnon non-locality and coherence. This work reveals that the two-magnon non-locality and coherence can be generated. For an initial maximal correlated two-magnon state, the initial UIN non-locality is shown to be more resilient than the maximum Bell function and log-negativity. The amplitudes of the two-magnon non-locality quantifiers decline as a result of the two-magnon coupling. The Bell non-locality and L-NE are reduced via spontaneous emission and dissipation, but the two-magnon UIN-coherence is preserved. These findings contribute to a better understanding of such dynamics and may shed light on measurement estimation in open quantum systems.

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Exploring Two‐Exciton Steerability and Nonlocality Dynamics in Two Open Microcavities Coupled by an Optical Fiber

Aldosari,

Hashem

2024

Annalen der Physik

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This work will explore the generations of quantum nonlocalities (as entanglement, Bellnonlocality, and steerability) for two quantum wells (excitons) in dissipative microcavities containing a linear optical medium. An optical fiber links the microcavities. The generated two‐exciton nonlocalities are explored by using Bell inequality, steering inequality, and entanglement of formation. For initial correlated and uncorrelated states, the ability of the excitation–photon–fiber interactions to produce new generation and robustness of the two‐exciton nonlocality is investigated under the effects of the couplings of the exciton–photon and fiber–photon interactions as well as of the dissipations and the optical susceptibility. It is found that increasing the optical susceptibility enhances the regularity and amplitudes, reduces the frequencies of two‐exciton nonlocality dynamics, and supports dissipation degradations. For the initial uncorrelated state, decreasing the difference between the exciton–photon and fiber–photon couplings enhances the generations of the nonlocalities. For the initial correlated state, increasing the exciton–photon and fiber–photon couplings enhances the nonlocality conservation. For open microcavites, increasing the exciton–photon and fiber–photon couplings and the difference between them supports the nonlocality degradations resulting from the external environment dissipations.

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Correlation dynamics of nitrogen vacancy centers located in crystal cavities

Cited by 19 publications

References 66 publications

Non-local correlation dynamics in two-dimensional graphene

Non-local correlation dynamics in two-dimensional graphene

Two‐Magnon Non‐Locality and Coherence Induced by an Open Microwave Cavity: Generation and Robustness

Exploring Two‐Exciton Steerability and Nonlocality Dynamics in Two Open Microcavities Coupled by an Optical Fiber

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