‎ Quantum dynamics of a f-deformed cavity-field beyond the rotating wave approximation

• Main Author: M Daeimohammad
• Format: Article
• Language: English
• Published: Isfahan University of Technology 2021-05-01
• Series: Iranian Journal of Physics Research
• Subjects: f-deformed jaynes-cummings model; rotating wave approximation; counter-rotating terms; ‎virtual-photon processes‎
• Online Access: http://ijpr.iut.ac.ir/article_1670_714b3e86e1781bafb1647e3713a3d5a4.pdf

The aim of this study is to investigate dynamical properties of a two-mode f-deformed cavity- field ‎coupled to an effective two-level atom with and without the rotating wave approximation. The first ‎section discusses the theoretical model of the interaction between a two-mode cavity-field and an ‎effective two-level atom within the framework of an f-DJCM without the rotating wave ‎approximation. After that, we obtain the reduced density matrix of the cavity-field with and without ‎the rotating-wave approximation. Then, we have investigated the effect of the counter-rotating ‎terms on temporal evolution of various non-classical properties of the cavity-field, i.e., photon-‎counting statistics, the cross correlation between the modes of the field, and the quantum ‎fluctuations of the quadrature components. Particularly, we compare the numerical result for three ‎different values of the deformation parameter q (q=1, q=1.1, q=0.9) with and without applying the rotating ‎wave approximation. By using of the numerical method, we concluded that even under the ‎condition in which the RWA is considered to be valid, there are the significant effects of virtual-‎photon field on the photon-counting statistics, the cross correlation between the modes of the ‎field, and the quantum fluctuations of the quadrature components‎.