Abdel-Wahab N H, Zangi S M, Seoudy Tamer A, Haddadi Saeed
Department of Mathematics, Faculty of Science, Minia University, Minia, Egypt.
Department of Physics, University of Sargodha, Sargodha, 40100, Pakistan.
Sci Rep. 2024 Oct 24;14(1):25211. doi: 10.1038/s41598-024-76629-x.
We present an analytical solution for a quantum system characterized by a double five-level atom interacting with an intensity-dependent coupling regime, influenced by a nonlinear Kerr-like medium. We also derive the constants of motion through Heisenberg's equations. Furthermore, the dynamical evolution of the entanglement and quantum coherence between the atom and the field is discussed using linear entropy and -norm of coherence. Through a comprehensive examination of the quantum system, it is observed that both the detuning and the Kerr-like parameters exert a significant impact on the degree of entanglement and coherence. However, the impacts of detuning and the Kerr effect become less pronounced when the photon multiplicity is high. In addition, we conduct a comparison between the five-level atomic system and a four-level system, revealing that the number of energy levels has a profound impact on the behavior of entanglement and coherence. These findings highlight the importance of atomic structure and photon multiplicity in controlling and optimizing quantum processes, particularly in applications involving quantum communication and information processing.
我们给出了一个量子系统的解析解，该系统由一个双五能级原子与强度依赖耦合机制相互作用表征，受非线性类克尔介质影响。我们还通过海森堡方程推导了运动常数。此外，利用线性熵和相干性的 -范数讨论了原子与场之间纠缠和量子相干的动力学演化。通过对量子系统的全面研究发现，失谐和类克尔参数都对纠缠和相干程度有显著影响。然而，当光子多重性较高时，失谐和克尔效应的影响变得不那么明显。此外，我们对五能级原子系统和四能级系统进行了比较，结果表明能级数量对纠缠和相干行为有深远影响。这些发现突出了原子结构和光子多重性在控制和优化量子过程中的重要性，特别是在涉及量子通信和信息处理的应用中。
