Raffah,, Bahaaudin Mohammadnoor and Abdel-khalek,, Sayed and Berrada,, Kamal and Khalil,, Eied and Al-Hadeethi,, Yas Fadel and Almalky,, Nawal and Wahiddin, Mohamed Ridza (2020) Quantum correlations and quantum fisher information of two qubits in the presence of the time-dependent coupling effect. European Physical Journal Plus, 135 (6). ISSN 2190-5444
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Abstract
In this paper, we consider two separate Jaynes–Cummings (JC) nodes with a nonidentical qubit-field system in the presence of dissipation terms. We reveal the influence of the time variation of the coupling terms on some important measures when the qubits are immersed in a vacuum. The density matrix for the two qubits initially in Bell states are obtained. The dynamical behavior of the quantum discord (QD), classical correlation (CC), qubit-qubit entanglement, and quantum Fisher information (QFI) is investigated. We explore the relationship among QD, CC, qubit-qubit entanglement, and QFI in the absence and presence of the dissipation effect during the time evolution. Furthermore, we show the main optimal conditions for obtaining a high level of correlation and coherence between the two qubits. © 2020, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 3760/81530 |
| Uncontrolled Keywords: | Quantum correlations, quantum fisher information, two qubits in the presence of the time-dependent coupling effect |
| Subjects: | T Technology > T Technology (General) |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Information and Communication Technology Kulliyyah of Information and Communication Technology |
| Depositing User: | Norain Anuar |
| Date Deposited: | 04 Aug 2020 12:03 |
| Last Modified: | 10 Nov 2020 15:32 |
| URI: | http://irep.iium.edu.my/id/eprint/81530 |
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