Observation of chiral edge states with neutral fermions in synthetic Hall ribbons
Observation of chiral edge states with neutral fermions in synthetic Hall ribbons
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DOI：
10.1126/science.aaa8736
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发表时间：
2015-09-25
期刊：
影响因子：
56.9
通讯作者：
Fallani, L.
中科院分区：
文献类型：
--
作者：
Mancini, M.;Pagano, G.;Fallani, L.
手征边态是量子霍尔物理的一个标志。在电子系统中，它们表现为磁场感应的回旋轨道的宏观结果，回旋轨道在样品的物理边界处自然被截断。本文报道了在人工规范场作用下，中性费米子超冷气体在带状几何中手征边态的实验实现。通过沿合成维度成像单个位置，编码在原子的核自旋中，我们检测到边缘态的存在，并观察到在猝灭动力学过程中产生的边缘回旋轨道。费米子手征边态的实现为边态干涉测量和原子系统中非阿贝尔任意子的研究打开了大门。
Chiral edge states are a hallmark of quantum Hall physics. In electronic systems, they appear as a macroscopic consequence of the cyclotron orbits induced by a magnetic field, which are naturally truncated at the physical boundary of the sample. Here we report on the experimental realization of chiral edge states in a ribbon geometry with an ultracold gas of neutral fermions subjected to an artificial gauge field. By imaging individual sites along a synthetic dimension, encoded in the nuclear spin of the atoms, we detect the existence of the edge states and observe the edge-cyclotron orbits induced during quench dynamics. The realization of fermionic chiral edge states opens the door for edge state interferometry and the study of non-Abelian anyons in atomic systems.