Dzyaloshinsky-Moriya作用影响下的qubit-qutrit系统关联动力学

Correlation Dynamics of Qubit-qutrit System with Dzyaloshinsky-Moriya Interaction

本文分析了与各自自旋链环境相互耦合的qubit和qutrit中的negativity和几何量子失协动力学,讨论了系统和环境间的耦合强度g、各向异性参数γ、粒子数N、初始参数p以及Dzyaloshinsky-Moriya相互作用对系统演化的影响,得到一些重要结论。另外发现,依赖于各参数的选取,negativity不总是大于几何量子失协,且几何量子失协存在突然改变点。

We analyzed the dynamical behaviour qutrit system in this paper. The central qubit s of negativity and geometric quantum discord in a qubit and （qutrit） was coupled with its own spin-chain environment. The effect of coupled strength g, anisotropy parameter γ, the number of particles N, the initial parameter p and Dzyaloshinsky-Moriya interaction on evolution of system was investigated and some significant results have been obtained. What＇ s more, it was shown that the negativity was not always greater that the geometric quantum discord, and there was the sudden change point for geometric quantum discord when the proper parameters were chosen.