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Microscopic Study on Superexchange Dynamics of Composite Spin-1 Bosons

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arxiv 2403.09205 v3 pith:ZSMJRYHX submitted 2024-03-14 cond-mat.quant-gas

Microscopic Study on Superexchange Dynamics of Composite Spin-1 Bosons

An Luo , Yong-Guang Zheng , Wei-Yong Zhang , Ming-Gen He , Ying-Chao Shen , Zi-Hang Zhu , Zhen-Sheng Yuan , Jian-Wei Pan This is my paper
classification cond-mat.quant-gas
keywords spin-1superexchangebosonscompositedynamicsmodelquantumanisotropy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 non-equilibrium 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.

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