Thermal information and teleportation in two-qutrit Heisenberg XX chain model

Alexandria Engineering Journal

S. Abdel-Khalek¹  Mohamed Omri²  M.Y. Abd-Rabbou³  E.M. Khalil³ 

[1] Department of Mathematics, College of Science, P.O. Box 11099, Taif University, Taif 21944, Saudi Arabia;Deanship of Scientific Research, King Abdulaziz University, Jeddah, Saudi Arabia;Mathematics Department, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt;

关键词: Quantum Fisher information;    Coherence;    Fidelity;    Teleportation;    Two-qutrit Heisenberg Chain model;   

DOI  :  

来源: DOAJ

【 摘 要 】

We employ the concepts of quantum Fisher information, quantum coherence, and fidelity to study a thermally environmental effect on the teleportation process. It is assumed that a single qutrit is teleported through a thermally environmental containing a two-qutrit Heisenberg XX chain under the external magnetic field (EMF) and Dzyaloshinski Moriya (DM) interaction. The energy spectrum of the physical Hamiltonian and its eigenstates are employed to obtain the thermal density matrix, which is used as a thermal teleportation environment. The Resort to the definition of quantum Fisher information for a single qubit system, we estimate the optimal behaviour concerning the EMF and temperature. The result shows that maximizing the estimation degree depends on increasing the EMF and minimizing it requires lowering temperature. The effect of temperature and DM coupling on the quantum coherence and fidelity of the teleported state is studied. It is shown that temperature destroyed the maximum bounds of the two physical quantity, while the DM coupling delays the effect of EMF at the same periods.

【 授权许可】

Unknown