International Journal of Modern Physics B

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

Xue-Min Bai, Jun‐Qi Li, J.-Q. Liang

Published Sep 5, 2016• 0 citations

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.

DOI: 10.1142/s021797921650171x

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