从Rydberg集群中断裂的ergodicity在一个驱动的分散的多体系统中
Dongsheng Ding1,2, Zhengyang Bai3, Zongkai Liu1,2
1Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China.
里德伯格原子展示了从ergodic转向ergodicity-breaking动态的转变,显示了由于里德伯格激发集群的长时间振荡. 这揭示了它们研究量子多体系统和相位过渡的潜力.
科学领域:
- 量子多体物理学 量子多体物理学
- 原子物理 原子物理
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 在量子系统中探测ergodicity破坏是很困难的,因为散射破坏量子连贯性.
- 里德伯格原子提供了一个研究异国情调阶段和非ergodic动态的平台,其中相互作用可以克服消散.
研究的目的:
- 为了实验性地研究驱动散射的里德伯格原子气体中的ergodicity破裂动力学.
- 确定这些系统中被破坏的ergodicity的特征和潜在机制.
主要方法:
- 使用Rydberg原子在驱动散流的设置中.
- 在室温下观察动态,突出强烈的赖德伯格相互作用的作用.
- 实验调节原子密度以验证集体效应.
主要成果:
- 实验证据表明从ergodic转变为破坏ergodicity的动态.
- 长时间的相位振荡的观察,表明了被破坏的ergodicity.
- 将被打破的ergodicity归因于形成极限周期和被打破对称性的里德伯格激发集群.
结论:
- 瑞德伯格多体系统适用于探测ergodicity破坏动力学,包括极限周期.
- 这些系统提供了一个平台,用于对不平衡阶段过渡进行基准测试.
- 在瑞德伯格系统中,集体效应对于观察破坏对称性和非ergodic行为至关重要.
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