Microscopic Study on Superexchange Dynamics of Composite Spin-1 Bosons.
作者信息
Luo An, Zheng Yong-Guang, Zhang Wei-Yong, He Ming-Gen, Shen Ying-Chao, Zhu Zi-Hang, Yuan Zhen-Sheng, Pan Jian-Wei
机构信息
Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, <a href="https://ror.org/04c4dkn09">University of Science and Technology of China</a>, Hefei 230026, China.
CAS Center for Excellence in Quantum Information and Quantum Physics, <a href="https://ror.org/04c4dkn09">University of Science and Technology of China</a>, Hefei 230026, China.
出版信息
Phys Rev Lett. 2024 Jul 26;133(4):043401. doi: 10.1103/PhysRevLett.133.043401.
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.
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