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超冷原子的动态道化

W K Hensinger¹, H Häffner, A Browaeys

¹National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. hensinge@physics.uq.edu.au

|July 14, 2001

概括

研究人员观察到超冷原子中的动态道化,一种非经典的运动过程. 这种量子现象允许粒子在没有能量屏障的情况下在经典禁止状态之间移动.

科学领域:

量子力学就是量子力学.
原子物理原子物理
非线性动力学是一种非线性动力学.

背景情况:

量子道是一种非经典现象,粒子通过能量屏障.
动态道,预测在20世纪80年代,涉及运动被禁止经典的保存量,而不是能量屏障.
这个过程在混乱的,周期驱动的非线性系统中是预期的.

研究的目的:

通过实验观察波斯-爱因斯坦凝聚物中的动态道化.
为了证明古典孤立区域之间的连贯量子运动.

主要方法:

使用来自斯-爱因斯坦凝结物的超冷原子.
采用振幅调节的光学静电波来创建系统.
观察原子运动和量子连贯性.

主要成果:

在斯-爱因斯坦凝聚物中实验观察动态道化.
原子在振荡运动状态之间连贯地道化.
在正则运动岛屿之间展示了来回的运动.

结论:

动态道化在超冷原子中经过实验验证.
这项研究为探索量子混乱和非经典动态提供了一个平台.
复杂系统中量子状态的连贯控制是可以实现的.

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