Quantum coherence and nonlocality of two qubits in the presence of a common dephasing environment

• Published in: Results in physics Vol. 51; p. 106666
• Main Authors: Berrada, K., Sabik, A., Eleuch, H.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-2023; Elsevier
• Subjects: Coherence; Quantum correlations; Quantum dynamics; Qubits–environment interaction; Qubit–qubit interaction; Quantum dynamics; Qubits–environment interaction; Qubit–qubit interaction; Quantum correlations; Coherence
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2023.106666

We study the coherence and quantum correlations for a system consisting of two interacting qubits under the effect of a common environment, where the system of qubits has the dephasing coupling with its surrounding. We study the dynamical behavior of the quantumness measures when the influence of the qubits’ interaction on the dephasing is analyzed. We display the effect of the qubit–qubit interaction and qubits–environment interaction on the measures considering the case of symmetry and asymmetry interaction between the qubits and environment. Finally, we explicitly illustrate the relation between the coherence and quantum correlations and show that quantum coherence and correlations can be preserved during the dynamics.
•Quantum dynamics.•Symmetry and asymmetry interaction.•Qubit–qubit interaction.•Qubits–environment interaction.•Coherence and quantum correlations.