对预热离散时间晶体的观察
A Kyprianidis1, F Machado2,3, W Morong4
1Joint Quantum Institute, Department of Physics, and Joint Center for Quantum Information and Computer Science, University of Maryland, College Park, MD 20742, USA. akyprian@umd.edu.
Science (New York, N.Y.)
|June 11, 2021
概括
研究人员使用被困离子量子模拟器观察一种前热离散时间晶体, 高频驱动绕过了加热问题, 能够研究这些新出现的量子相.
科学领域:
- 统计物理
- 量子力学
- 凝聚物质物理
背景情况:
- 扩展统计物理学到不平衡系统,
- 在强烈相互作用的量子系统中, 失控的加热阻碍了这些新阶段的研究.
- 疾病诱导的多体局部化是防止加热的常见方法.
研究的目的:
- 观察一个预热的离散时间晶体的特征,一个不平衡的驱动阶段,而不依赖于混乱.
- 展示一个在驱动量子系统中绕过加热问题的方法.
- 将Floquet预热化作为研究失衡阶段的一般策略.
主要方法:
- 使用被困离子量子模拟器.
- 使用高频驱动来规避加热.
- 观察预热离散时间晶体相的特征.
主要成果:
- 已经成功地观察了预热时间晶体的特征.
- 证明高频率驾驶, 而不是混乱, 可以防止失控的加热.
- 建立了一个广泛的时间窗口来观察不平衡阶段.
结论:
- 对于创建和稳定不平衡阶段,Floquet预热是一种可行的策略.
- 这种方法可以研究物质本质上失衡的阶段.
- 捕获离子量子模拟器是探索这些现象的有效工具.
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