Response of quantum Fisher information, variance entropy squeezing and entanglement to the intrinsic decoherence of two non-degenerate fields interacting with two qubits

Alexandria Engineering Journal

M. Abdel-Aty¹  E.M. Khalil²  H.R. Besbes³  S. Abdel-Khalek⁴  A.-B.A. Mohamed⁴ 

[1] Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt;Department of Mathematics, Faculty of Science, Sohag University, 82524 Sohag, Egypt;Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam bin Abdulaziz University, Saudi Arabia;Department of Mathematics, College of Science, Taif University, Taif 888, Saudi Arabia;

关键词: IQuantum Fisher information;    Quantum entanglement;    Concurrence;    Dipole–dipole interaction;   

DOI  :  

来源: DOAJ

【 摘 要 】

We investigate the link between quantum Fisher information (QFI) and quantum entanglement for a scheme of two atoms that interact with two non-degenerate modes in the absence and presence of intrinsic decoherence effect. The explicit form of the density matrix approach to the dissipative systems is given when the cavity-field is in generalized coherent states. The dynamical behavior of the QFI is compared with the atom–atom concurrence entanglement. We examine the effect of the dipole–dipole interaction and intrinsic decoherence on the dynamical properties of the QFI, concurrence and variance entropy squeezing. It is found that the atom–atom concurrence and the QFI can be controlled by the intrinsic decoherence and the dipole–dipole interaction.

【 授权许可】

Unknown