Measurement-induced disturbance and thermal entanglement in a two-qutrit spin system with a uniaxial field

Author:

Bai Xue-Min1,Li Jun-Qi1,Liang J.-Q.1

Affiliation:

1. Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, Shanxi, P. R. China

Abstract

We investigate in this paper measurement-induced disturbance (MID) and negativity in a two-spin-qutrit model by considering the influence of the external magnetic field, nonlinear coupling parameter, the uniaxial field and temperature. It is shown that all of these parameters play a significant role in negativity and MID. We make an explicit comparison between the negativity and MID and disclose some interesting results. By the way, we find that negativity is a better measure than MID to detect the sudden point in a finite temperature, which is obviously different from the previous findings.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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