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Exploring Non-Abelian Geometric Phases in Spin-1 Ultracold Atoms.

08:00 EDT 25th October 2019 | BioPortfolio

Summary of "Exploring Non-Abelian Geometric Phases in Spin-1 Ultracold Atoms."

The spin vector of a spin-1 system, unlike that of a spin-1/2 system, 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 ultracold ^{87}Rb atoms confined in an optical trap using microwave and rf control fields.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 173202

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