Extracting non-Abelian quantum metric tensor and its related Chern numbers
Hai-Tao Ding,
Yan-Qing Zhu,
Peng He
et al.
Abstract:The complete geometry of quantum states in parameter space is characterized by the quantum geometric tensor, which contains the quantum metric and Berry curvature as the real and imaginary parts, respectively. When the quantum states are degenerate, the quantum metric and Berry curvature take non-Abelian forms. The non-Abelian (Abelian) Berry curvature and Abelian quantum metric have been experimentally measured. However, an experimentally feasible scheme to extract all the components of the non-Abelian quantu… Show more
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