通过CHSH函数研究量子非局部性及其在无序费米子中的扩展
1Graduate School of Engineering Science, Akita University, Akita 010-8502, Japan.
Journal of physics. Condensed matter : an Institute of Physics journal
|September 18, 2024
概括
研究了无序费米子系统中的量子非局部性. 克劳泽-霍恩-西蒙尼-霍尔特不等式显示了关键阶段的有限违规概率,表明了量子非局部性.
科学领域:
- 量子物理学 量子物理学 是一种量子物理学.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 量子非局部性是量子力学的一个基本性质.
- 了解多体系统中的非局部性对于量子信息科学至关重要.
- 准周期性障碍引入了量子系统中的复杂行为.
研究的目的:
- 为了研究一个无序的费米子多体系统中的量子非局部性.
- 分析Clauser-Horne-Shimony-Holt (CHSH) 不等式在相位过渡附近的行为.
- 使用Mermin-Klyshko-Svetlichny (MKS) 多项式来探索多方位非局部性.
主要方法:
- 对CHSH不平等的系统调查.
- 分析量子非局部定量器围绕延长和关键相位过渡的分析.
- 对MKS多项式进行研究,以描述多方位量子非局部性.
主要成果:
- 在全球平均的最大值中,CHSH不平等没有被打破.
- 在关键阶段和阶段边界的特定位点对中观察到CHSH不等式的有限违规概率.
- 邻近的三量子比特MKS多项式在关键模式中表现出非本地违规模式.
结论:
- 在无序的费米子系统中,量子非局部性仍然存在,特别是在临界点附近.
- 违反CHSH和MKS不平等的行为在系统的特定部分提供了非局部性的签名.
- 这些发现提供了对混乱,相位过渡和量子纠之间的相互作用的见解.
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