GENERATION AND ROBUSTNESS OF QUANTUM MEMORY-ASSISTED ENTROPIC UNCERTAINTY AND UNCERTAINTY-INDUCED NONLOCALITY OF TWO NITROGEN-VACANCY CENTERS COUPLED BY OPEN TWO NANOCAVITIES

Abdel-Haleem Abdel-Aty, Abdel-Baset A. Mohamed, Atta Ur Rahman and Hichem Eleuch
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Abdel-Haleem Abdel-Aty: Department of Physics, College of Sciences, University of Bisha, P. O. Box 344, Bisha 61922, Saudi Arabia2Physics Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
Abdel-Baset A. Mohamed: Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam bin Abdulaziz University, Saudi Arabia4Department of Mathematics, Faculty of Science, Assiut University, Assiut, Egypt
Atta Ur Rahman: Key Laboratory of Aerospace Information, Security and Trusted Computing, Wuhan University, Wuhan 430072, P. R. China

FRACTALS (fractals), 2022, vol. 30, issue 05, 1-14

Abstract: In this paper, we investigate the dynamics of quantum memory-assisted entropic uncertainty, uncertainty-induced nonlocality and log-negativity entanglement of two nitrogen-vacancy centers (NVC). In particular, we are interested in analyzing two nitrogen-vacancy centered qubits coupled with two coherent nanocavities. We consider two different configurations of NVC qubits: when the qubits are prepared initially in separable and maximally entangled states. We demonstrate that coherent nanocavities can be successfully used to generate nonlocality and entanglement in the two NVC qubits while suppressing the associated entropic uncertainty. When the system is considered initially in separable two-NVC qubits, we show that the coupled coherent nanocavities successfully generate nonlocality and entanglement while avoiding the associated entropic uncertainty. The parameter’s adjustment determines the degree of entanglement, non-locality generation, and preservation. In comparison, we find entanglement more vulnerable to the decoherence and entropic uncertainty action between the two NVC qubits and nanocavities than the uncertainty-induced nonlocality. Furthermore, the NVC-qubits coupled with two coherent nanocavities promote entanglement’s sudden birth and death phenomena. This study contributes to the quantum mechanical protocols requiring the robust practical generation of entanglement and nonlocality as well as the related information preservation for the increased efficiency of quantum devices.

Keywords: Quantum Memory-Assisted Entropic Uncertainty; Uncertainty-Induced Non; ocality; Nitrogen-Vacancy Centers; Nanocavities (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218348X22401855

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