Exploring Non-Abelian Geometric Phases in Spin-1 Ultracold Atoms
Exploring Non-Abelian Geometric Phases in Spin-1 Ultracold Atoms
复制标题
探索 Spin-1 超冷原子中的非阿贝尔几何相
DOI:
10.1103/physrevlett.123.173202
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发表时间:
2019
影响因子:
8.6
通讯作者:
Chapman, Michael S.
中科院分区:
文献类型:
--
作者:
H. M., Bharath;Boguslawski, Matthew;Barrios, Maryrose;Xin, Lin;Chapman, Michael S.
The spin vector of a spin-1 system, unlike that of asystem, can lie anywhere on or inside the Bloch sphere representing the phase space. As a consequence, the geometrical and topological properties of the spin-1 phase space of quantum states are richer and require a generalization of Berry’s phase. For special trajectories passing through the center of the Bloch sphere (singular loops), the geometric phase has a non-Abelian nature. Here, we experimentally explore this geometric phase for singular loops in a spin-1 quantum system using ultracoldatoms confined in an optical trap using microwave and rf control fields.