Off-diagonal components of the quantum metric for a synthesized tensor monopole in a 4D parameter space built in superconducting quantum circuits. Selected for an Editors’ Suggestion.

From the article:

Experimental Observation of Tensor Monopoles with a Superconducting Qudit
Xinsheng Tan, Dan-Wei Zhang, Wen Zheng, Xiaopei Yang, Shuqing Song, Zhikun Han, Yuqian Dong, Zhimin Wang, Dong Lan, Hui Yan, Shi-Liang Zhu, and Yang Yu
Phys. Rev. Lett. 126, 017702 (2021)

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