%A Ying-Yue Yang(杨颖玥), Li-Juan Li(李丽娟), Liu Ye(叶柳), and Dong Wang(王栋) %T Quantum correlation and entropic uncertainty in a quantum-dot system %0 Journal Article %D 2022 %J Chin. Phys. B %R 10.1088/1674-1056/ac7295 %P 100303-100303 %V 31 %N 10 %U {https://cpb.iphy.ac.cn/CN/abstract/article_125083.shtml} %8 2022-10-16 %X We explore the dynamical behaviors of the measurement uncertainty and quantum correlation for a vertical quantum-dot system in the presence of magnetic field, including electron-electron interaction and Coulomb-blocked systems. Stemming from the quantum-memory-assisted entropic uncertainty relation, the uncertainty of interest is associated with temperature and parameters related to the magnetic field. Interestingly, the temperature has two kinds of influences on the variation of measurement uncertainty with respect to the magnetic-field-related parameters. We also discuss the relation between the lower bound of Berta et al. and the quantum discord. It is found that there is a natural competition between the quantum discord and the entropy minΠiBSΠiB(ρA|B). Finally, we bring in two improved bounds to offer a more precise limit to the entropic uncertainty.