Microscopic Study on Superexchange Dynamics of Composite Spin-1 Bosons

We report on an experimental simulation of the spin-1 Heisenberg model with composite bosons in a one-dimensional chain based on the two-component Bose-Hubbard model. Exploiting our site- and spin-resolved quantum gas microscope, we observed faster superexchange dynamics of the spin-1 system compare...

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Bibliographic Details
Published in:Physical review letters 2024-07, Vol.133 (4), p.043401, Article 043401
Main Authors: Luo, An, Zheng, Yong-Guang, Zhang, Wei-Yong, He, Ming-Gen, Shen, Ying-Chao, Zhu, Zi-Hang, Yuan, Zhen-Sheng, Pan, Jian-Wei
Format: Article
Language:English
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Summary:We report on an experimental simulation of the spin-1 Heisenberg model with composite bosons in a one-dimensional chain based on the two-component Bose-Hubbard model. Exploiting our site- and spin-resolved quantum gas microscope, we observed faster superexchange dynamics of the spin-1 system compared to its spin-1/2 counterpart, which is attributed to the enhancement effect of multi-bosons. We further probed the nonequilibrium spin dynamics driven by the superexchange and single-ion anisotropy terms, unveiling the linear expansion of the spin-spin correlations, which is limited by the Lieb-Robinson bound. Based on the superexchange process, we prepared and verified the entangled qutrits pairs with these composite spin-1 bosons, potentially being applied in qutrit-based quantum information processing.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.133.043401