多体定位离散时间晶体与可编程的基于自旋的量子模拟器
J Randall1,2, C E Bradley1,2, F V van der Gronden1,2
1QuTech, Delft University of Technology, PO Box 5046, 2600 GA Delft, Netherlands.
Science (New York, N.Y.)
|November 4, 2021
概括
研究人员使用量子模拟器观察了离散时间晶体 (DTC), 这一突破证明了强大的时间晶体秩序, 并为探索多体物理开辟了新的途径.
科学领域:
- 量子物理学
- 凝聚物质物理
- 多体物理学
背景情况:
- 离散时间晶体 (DTC) 代表了物质的新型不平衡阶段.
- 他们自发地打破了时间转换对称性.
- 由疾病引起的多体局部化对于通过防止热化来稳定DTC至关重要.
研究的目的:
- 观察多体局部化DTC的标志性特征.
- 用一个量子模拟平台来研究这个奇特的阶段.
- 证实时间晶体秩序的稳定性和特征.
主要方法:
- 采用一个量子模拟平台, 使用可单独控制的碳-13核旋转.
- 证明了长时间的周期倍振动.
- 验证了这些振荡的稳定性对于通用的初始状态.
主要成果:
- 观察到多体定位离散时间晶体的明确特征.
- 在多体光谱中确认了特征性的时间晶体秩序.
- 结果与实现失衡的Floquet阶段一致.
结论:
- 成功实现并观察了多体定位的离散时间晶体.
- 介绍了一个可编程的固态自旋量子模拟器用于多体物理研究.
- 这为进一步探索不平衡量子现象铺平了道路.
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