Work

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

Year: 2019

Type: article

Abstract: 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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.123.173202

Authors: Bharath H. M., Matthew Boguslawski, Maryrose Barrios, Lin Xin, Michael S. Chapman

Institutions: Georgia Institute of Technology, Max Planck Institute of Quantum Optics, Ludwig-Maximilians-Universität München

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Awards: Quantum Control and Entanglement in a Strongly Interacting Spin Ensemble, Exploring New Frontiers in Spin-1 Dynamics, Geometry and Metrology