将半古典周期轨道嵌入混乱的多体哈密尔顿主义者
Andrew Hallam1, Jean-Yves Desaules1, Zlatko Papić1
1School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
Physical review letters
|September 29, 2023
概括
我们开发了一种方法,将所需的周期轨道嵌入混乱的量子系统中,保护量子动力学. 这种方法使工程师在Floquet模型中确切地确定量子多体痕,这对量子技术至关重要.
科学领域:
- 量子物理学的量子物理学
- 多体系统是多体系统.
- 量子信息科学是一种量子信息科学.
背景情况:
- 保护量子动力学免受环境混乱对量子技术至关重要.
- 多体现象往往很脆弱,容易发生脱节.
- 量子多体痕是抵抗热化的非热性固有状态.
研究的目的:
- 提出将周期轨道嵌入到不可整合的多体哈密尔顿数的一般构造.
- 为了设计出表现出精确痕动态的量子系统.
- 为了补充现有的方法,将非热特态嵌入到热化光谱中.
主要方法:
- 利用依赖时间的变化原理将量子动力学投射到低纠状态上.
- 设计特定的术语来抑制变化分流体外的动力学泄漏.
- 将构造应用于驱动的Affleck-Kennedy-Lieb-Tasaki模型和超导量子比特链.
主要成果:
- 在混乱的多体系统中嵌入所需周期轨道的一般方法.
- 工程Floquet模型展示了精确的量子多体痕动力学.
- 在理论模型和实验系统中展示方法.
结论:
- 提出的构造有效地保护混乱环境中的连贯量子动力学.
- 这项工作为实现和控制脆弱的多体现象提供了一条途径.
- 这些发现对推进量子技术具有重大意义.
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