https://doi.org/10.1140/epjp/s13360-020-00801-1
Regular Article
Effect of Stark shift on nonlocal correlation of two atoms in a cavity containing a parametric amplifier and a Kerr like medium
1
Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam bin Abdulaziz University, Al-Aflaj, Saudi Arabia
2
Faculty of Science, Assiut University, Assiut, Egypt
3
Department of Mathematics, College of Science, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia
4
Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt
Received:
10
July
2020
Accepted:
23
September
2020
Published online:
7
October
2020
An analytical solution is obtained for a system consisting of two atoms interacting with a nondegenerate parametric amplifier of a cavity field containing a Kerr like medium in the presence of Stark shift terms. The nonlinearity of the interaction leads to the generation of different nonlocal correlations (NLCs) beyond entanglement concurrence, which are measured by uncertainty-induced quantum nonlocality and maximal Bell’s function. It is found that the generation of the NLCs, due to the atom-cavity unitary interaction, can be controlled by the nonlinearity of the Kerr like medium and the Stark shift. The Kerr like medium and the Stark shift lead to reduce the regularity and the amount of the generated nonlocal correlations. The reduction in the generated nonlocal correlations, due to the Kerr like medium, is increased by the increase in the Stark shift parameter and vice versa.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020
