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在量子处理器的多体混沌和局部化阶段测量光谱形状因子
Hang Dong1, Pengfei Zhang1, Ceren B Dağ2,3
1Zhejiang University, School of Physics, ZJU-Hangzhou Global Scientific and Technological Innovation Center, and Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, Hangzhou, China.
Physical review letters
|February 6, 2025
概括
我们使用超导量子处理器在量子多体系统中实验测量了光谱形状因子 (SFF). 这种方法揭示了量子混乱的特征,区分混乱阶段和局部阶段.
科学领域:
- 量子物理学的量子物理学
- 凝聚物质物理学 凝聚物质物理学
- 量子信息科学是一种量子信息科学.
背景情况:
- 光谱形状因子 (SFF) 对于理解量子混乱至关重要,并且在黑洞物理学和多体系统中具有应用.
- 在多体系统中,通过实验测量SFF是很困难的,因为能量水平间隔呈指数小.
研究的目的:
- 开发和应用一种新的实验方法来测量量子多体系统中的SFF.
- 探测量子混乱,并区分这些系统中的混乱和局部阶段.
- 使用超导量子处理器进行直接SFF测量.
主要方法:
- 利用随机测量工具箱进行SFF的直接实验测量.
- 在超导量子处理器上进行测量.
- 测量了SFF的概括,部分SFF,以探讨自身状态统计.
主要成果:
- 在Floquet混乱系统的SFF中观察到的坡道平原行为,表明短距离和长距离的光谱相关性.
- 对于一个哈密尔顿混沌系统,在SFF中观察到的坡-高原行为,与随机矩阵理论一致.
- 在量子多体混沌和热前多体局部化相之间进行区分.
- 在混乱和局部阶段的低密度矩阵的纯度中观察到不同的行为.
结论:
- 随机测量工具箱提供了一个新的实验途径,以提取多体量子混乱的普遍签名.
- 这种技术允许在量子设备中调查光谱相关性和固态统计数据.
- 这些发现有助于更深入地了解复杂量子系统中的量子混乱.
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