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量子增强计量学基于冷的里德伯格气体的翻转轨迹

Ya-Jun Wang^1,2, Jun Zhang^1,2, Zheng-Yuan Zhang^1,2

¹Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui, China.

Nature communications

|January 12, 2026

概括

研究人员利用微波场在冷的原子系统中逆转了hysteresis轨迹. 这种方法通过放大相位过渡附近的响应来提高计量应用的灵敏度.

科学领域:

原子,分子和光学物理学
量子计量学量子计量学
多体物理多体物理

背景情况:

分散的瑞德伯格多体系统表现出复杂的动态轨迹.
这些系统中的歇斯底里循环在相位过渡附近显示出增强的灵敏度.
微波场驱动可以操纵这些轨迹.

研究的目的:

通过在冷原子系统中翻转hysteresis轨迹来证明增强的计量学.
通过关闭差距的点来研究灵敏度的放大.
使用此技术量化可实现的灵敏度.

主要方法:

实验性地翻转一个消散的瑞德伯格多体系统的动态轨迹.
应用微波场驱动的方法.
测量歇斯底里轨迹与拉比频率的交点.
分析对相互作用时间,光学深度和主要量子数的依赖性.

主要成果:

达到相当于1.6(5) nV cm^-1Hz^{-1/2 的灵敏度.}
通过操纵歇斯底里轨迹特征,表现出增强的灵敏度.
观察到测量对相互作用时间,光学深度和主要量子数的依赖性.

结论:

在寒冷的Rydberg多体系统中翻转hysteresis轨迹为增强计量学提供了一种新的方法.
折叠的hysteresis轨迹交叉处的尖峰会放大对小场变化的响应.
这种技术有可能推进传感和计量应用.

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