Geometric squeezing into the lowest Landau level
Geometric squeezing into the lowest Landau level
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DOI：
10.1126/science.aba7202
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发表时间：
2021-06-18
期刊：
影响因子：
56.9
通讯作者：
Zwierlein, Martin W.
中科院分区：
文献类型：
--
作者：
Fletcher, Richard J.;Shaffer, Airlia;Zwierlein, Martin W.
旋转中的粒子和磁场中的带电粒子之间的等效关系涉及到各种各样的现象，如旋转的原子核，天气模式和量子霍尔效应。对于这样的系统，量子力学规定，沿沿着不同方向的平移不会对易，这意味着空间坐标之间存在海森堡不确定性关系。我们实现压缩的几何量子不确定性，导致在一个旋转的玻色-爱因斯坦凝聚占据一个单一的朗道规范波函数。我们解决了零点回旋轨道的范围，并证明几何压缩的轨道的中心低于标准量子极限7分贝。凝聚体的角动量超过了每粒子1000个量子，原子间的距离与回旋加速器轨道相当。这为强相关玻色子流体提供了另一种途径。
The equivalence between particles under rotation and charged particles in a magnetic field relates phenomena as diverse as spinning atomic nuclei, weather patterns, and the quantum Hall effect. For such systems, quantum mechanics dictates that translations along different directions do not commute, implying a Heisenberg uncertainty relation between spatial coordinates. We implement squeezing of this geometric quantum uncertainty, resulting in a rotating Bose-Einstein condensate occupying a single Landau gauge wave function. We resolve the extent of zero-point cyclotron orbits and demonstrate geometric squeezing of the orbits' centers 7 decibels below the standard quantum limit. The condensate attains an angular momentum exceeding 1000 quanta per particle and an interatomic distance comparable to the cyclotron orbit. This offers an alternative route toward strongly correlated bosonic fluids.