caa a22 4500 463196945 CHVBK 20180406164925.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10773-006-9257-2 doi (NATIONALLICENCE)springer-10.1007/s10773-006-9257-2 Entropies and Entanglement for Initial Mixed State in the Multi-quanta JC Model with the Stark Shift and Kerr-like Medium [Elektronische Daten] [A.-S. Obada, F. Mohammed, H. Hessian, A.-B. Mohamed] In this paper, we study the time evolution of the entropies and the degree of entanglement in the mixed state for a multi-quanta JC model taking into consideration Stark shift and Kerr-like medium effect, we use a numerical method to investigate the time evolution of the partial entropy of the atom and field subsystem. This is done in the framework of the multi-quanta presses JC model with both the Stark shift and Kerr-like medium effect added. Furthermore, we examine the effect of the superposition states and a statistical mixture of coherent states as an initial field on the entropies and entanglement. Our results show that the setting of the initial state play an important role in the evolution of the sub-entropies and entanglement. Springer Science+Business Media, LLC, 2007 entropies nationallicence the degree of entanglement nationallicence mixed state nationallicence the superposition states and a statistical mixture of coherent states nationallicence Obada A.-S Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt aut Mohammed F. Faculty of Science, Assiut University, Assiut, Egypt aut Hessian H. Faculty of Science, Assiut University, Assiut, Egypt aut Mohamed A.-B Faculty of Science, Assiut University, Assiut, Egypt aut International Journal of Theoretical Physics Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 46/4(2007-04-01), 1027-1044 0020-7748 46:4<1027 2007 46 10773 https://doi.org/10.1007/s10773-006-9257-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10773-006-9257-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Obada A.-S Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt aut NATIONALLICENCE 700 1- Mohammed F. Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 700 1- Hessian H. Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 700 1- Mohamed A.-B Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 773 0- International Journal of Theoretical Physics Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 46/4(2007-04-01), 1027-1044 0020-7748 46:4<1027 2007 46 10773 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer