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Local quantum Fisher information and local quantum uncertainty in two-qubit Heisenberg XYZ chain with Dzyaloshinskii–Moriya interactions
Laser Physics ( IF 1.2 ) Pub Date : 2020-09-08 , DOI: 10.1088/1555-6611/abac65
Soroush Haseli

In this work we will study the Local quantum Fisher information and the local quantum uncertainty in two-qubit Heisenberg XYZ spin chain model with Dzyaloshinskii Moriya (DM) interaction in z direction. Here we show that the DM interaction and spin interactions along the x, y, and z axis can increase and maintain local quantum Fisher information and local quantum uncertainty. It is also shown that because of thermal fluctuations local quantum Fisher information and local quantum uncertainty are decreased by increasing temperature. They are equal to one at very low temperature and starts to decay only after a thershold temperature.

中文翻译:

具有 Dzyaloshinskii-Moriya 相互作用的双量子位 Heisenberg XYZ 链中的局域量子 Fisher 信息和局域量子不确定性

在这项工作中,我们将研究具有 Z 方向 Dzyaloshinskii Moriya (DM) 相互作用的双量子位 Heisenberg XYZ 自旋链模型中的局部量子 Fisher 信息和局部量子不确定性。在这里,我们表明沿 x、y 和 z 轴的 DM 相互作用和自旋相互作用可以增加和保持局部量子 Fisher 信息和局部量子不确定性。还表明,由于热波动,局部量子费雪信息和局部量子不确定性会随着温度的升高而降低。它们在非常低的温度下等于 1,并且只有在达到某个温度后才开始衰减。
更新日期:2020-09-08
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