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
复制
发表时间:
2019
影响因子:
8.6
通讯作者:
Chapman, Michael S.
Chapman, Michael S.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
H. M., Bharath;Boguslawski, Matthew;Barrios, Maryrose;Xin, Lin;Chapman, Michael S.

文献摘要

相似文献

自旋为1的系统的自旋矢量可以位于代表相空间的布洛赫球上或布洛赫球内的任何位置,这与系统的自旋矢量不同。因此,自旋为1的量子态相空间的几何和拓扑性质更加丰富,需要推广Berry相。对于通过布洛赫球中心的特殊轨迹(奇异环),几何相位具有非阿贝尔性质。在这里,我们实验探索这种几何相位的奇异环自旋1量子系统中使用ultracoldatom限制在一个光阱,使用微波和射频控制领域。
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.