能量过的量子状态和非局部关系的出现
Gianluca Morettini1, Luca Capizzi1, Maurizio Fagotti1
1<a href="https://ror.org/03xjwb503">Université Paris-Saclay</a>, CNRS, <a href="https://ror.org/00w67e447">LPTMS</a>, 91405, Orsay, France.
Physical review letters
|January 3, 2025
概括
这项研究引入了能量过的量子状态来模拟热状态. 这项研究揭示了如何逐渐减少能量方差导致热化,产生非局部量子相关性并破坏集群分解.
科学领域:
- 量子信息科学 量子信息科学
- 凝聚物质物理学 凝聚物质物理学
- 量子模拟的量子模拟
背景情况:
- 热态对于模拟量子系统至关重要.
- 能量过的量子状态提供了一种新的方法来有效地模拟这些状态.
- 了解过渡到热行为是量子物理学中的关键.
研究的目的:
- 通过能量过,探索一个将产品状态转换为自身状态的协议.
- 分析交叉现象和趋同到热行为.
- 在这个过程中调查非局部量子相关性的生成和特性.
主要方法:
- 开发和应用一个能量过协议.
- 逐渐减少量子状态的能量方差.
- 使用复制方法计算雷尼纠 entropies.
- 分析两点相关函数和纠缩量.
主要成果:
- 过状态表现出与时间平均密度矩阵无法区分的局部特性.
- 在中等能量过系统中出现非局部量子相关性.
- 集群分解被分解为两点相关函数.
- 纠缩量以对数的方式与大区域的体积相变.
结论:
- 能量过提供了一个有效的途径来模拟热状态.
- 该协议产生和量化非局部量子相关性.
- 这种方法提供了对量子热化和纠动态的见解.
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