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Updated: Mar 3, 2026

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由Scramblons启用的量子混沌动态的错误弹性逆转
Yu-Chen Li1, Tian-Gang Zhou2, Shengyu Zhang1,3
1University of Science and Technology of China, Laboratory of Spin Magnetic Resonance, School of Physical Sciences, Anhui Province Key Laboratory of Scientific Instrument Development and Application, Hefei 230026, China.
Physical review letters
|March 1, 2026
概括
研究人员通过实验测量了旋转系统中的量子混乱和信息杂乱. 他们开发了一种纠正错误的方法,揭示了指数级混沌,并首次提取了量子利亚普诺夫指数.
科学领域:
- 量子物理学 量子物理学 是一种量子物理学.
- 凝聚物质物理学 凝聚物质物理学
- 量子信息科学 量子信息科学
背景情况:
- 在量子多体系统中,时间的箭头源于信息杂乱和在哈密尔顿进化过程中越来越多的纠.
- 反向量子动力学在理论上是可能的,但在实践中由于逆向进化的误差的指数级放大而变得不稳定,这是量子多体混乱的特征.
研究的目的:
- 在宏观自旋系统中实验研究信息杂乱和量子混乱.
- 为了验证杂乱理论的预测,一个理解量子信息杂乱的框架.
- 开发和应用一个协议,以减轻时间外排序的相关系数测量中的错误.
主要方法:
- 利用固态核磁共振在一个宏观的随机相互作用的旋转组合上.
- 测量了时间外排序的相关因子 (OTOC) 来探测量子信息杂乱.
- 应用了争理论来识别和纠正OTOC测量的错误,这些错误是由不完美的逆向进化引起的.
主要成果:
- 成功测量了OTOC,并验证了争理论的关键预测.
- 展示了一种方法来隔离和减轻OTOC中的实验错误.
- 观察了量子多体混乱的预期指数行为,并在实验性多体系统中首次提取了量子利亚普诺夫指数.
结论:
- 该研究提供了在多体系统中第一个量子利亚普诺夫指数的实验测量.
- 开发的协议通过纠正逆向进化的错误来增强复杂量子系统中的动态可逆性.
- 结果对推进量子模拟,计量学和理解量子动力学的基本限制具有重大意义.
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