Quantum coherence and nonlocality of two qubits in the presence of a common dephasing environment
| dc.contributor.author | Berrada K. | |
| dc.contributor.author | Sabik A. | |
| dc.contributor.author | Eleuch H. | |
| dc.date.accessioned | 2024-05-28T10:02:22Z | |
| dc.date.available | 2024-05-28T10:02:22Z | |
| dc.date.issued | 2023-08 | |
| dc.description | Many phenomena have been discovered during the past several decades as resources to perform various tasks of quantum optics and information, both theoretically and experimentally (QIAP). Quantum correlations like nonlocal correlation and discord, in general, require the coherent superposition of quantum states [1], [2], [3], [4], [5], [6], [7], [8]. Many quantum effects in nano-thermodynamics [9], [10], highly sensitive and high-resolution measurements [11], [12], [13], [14], [15], quantum biology [16], [17], [18], etc. are based on quantum coherence. In light of the basic importance of quantum coherence, it has only lately been stressed that a precise theory of coherence with a few essential limitations is required to guarantee that quantum coherence could be a physical resource [19]. Consequently, some quantifiers have been suggested that confirm these limits, such as those that rely on the norm and relative entropy [19]. On the other side, quantum coherence may be measured using the convex-roof construction and nonlocal correlation [20], [21]. In addition, a quantum coherence operational theory has been proposed [22]. | |
| dc.description.abstract | 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. keywords: Coherence; Quantum correlations; Quantum dynamics; Qubits–environment interaction; Qubit–qubit interaction | |
| dc.identifier.citation | Berrada, K., Sabik, A., & Eleuch, H. (2023). Quantum coherence and nonlocality of two qubits in the presence of a common dephasing environment. Results in Physics, 51, 106666. | |
| dc.identifier.doi | https://doi.org/10.1016/j.rinp.2023.106666 | |
| dc.identifier.uri | https://dspace.adu.ac.ae/handle/1/5470 | |
| dc.language.iso | en | |
| dc.publisher | Science Direct | |
| dc.title | Quantum coherence and nonlocality of two qubits in the presence of a common dephasing environment | |
| dc.type | Article |