Extracting the quantum geometric tensor of an optical Raman lattice by Bloch-state tomography
Chang-Rui Yi, Jinlong Yu, Huan Yuan, Rui-Heng Jiao, Yumeng Yang, Xiao Qiang Jiang, Jinyi Zhang, Shuai Chen, Jian-Wei Pan · Physical Review Research · 2023
A complete Bloch state tomography is experimentally implemented to directly extract the quantum geometric tensor (QGT) in a two-dimensional optical Raman lattice. By rotating the measurement basis using a momentum-transferred Raman pulse, the expectation values of three Pauli matrices are measured and thus the QGT can be directly extracted.