论文标题
偶极旋转系统中的量子Fisher信息和偏斜信息相关性
Quantum Fisher information and skew information correlations in dipolar spin system
论文作者
论文摘要
量子Fisher信息（QFI）和偏斜信息（SI）在量子资源理论中起关键作用。了解物理系统中的这些措施在状态参数估计和量子计量学上具有实际意义。在本文中，我们考虑了一对Spin-1/2颗粒，以及偶极性和Dzyaloshinsky-Moriya（DM）相互作用，作为量子信息的物理载体。我们检查了以局部量子不确定性（LQU）和局部量子Fisher Information（LQFI）为特征的热平衡状态的Spin-1/2颗粒系统的双分裂非定位相关性。研究了偶极耦合常数对量子相关量词的影响。 DM相互作用大大增强了系统中的量子相关性，而温度倾向于消灭量子相关的量。
Quantum Fisher information (QFI) and skew information (SI) plays a key role in the quantum resource theory. Understanding these measures in the physical system has practical significance in the state parameter estimation and quantum metrology. In this article, we consider a pair ofspin-1/2 particles coupled with dipolar and Dzyaloshinsky-Moriya (DM) interactions, serving as the physical carrier of quantum information. We examine the bipartite nonlocal correlations of pair of spin-1/2 particle system for the thermal equilibrium states, characterized by local quantum uncertainty (LQU) and local quantum Fisher information (lQFI). The effects of dipolar coupling constants on quantum correlation quantifiers are studied. The DM interaction greatly enhances the quantum correlation in the system whereas the temperature tends to annihilate the amount of quantum correlations.
