论文标题
通过虚拟分子以superexchange为主导的旋转动力学
Spin dynamics dominated by superexchange via virtual molecules
论文作者
论文摘要
简单的范式系统是理解强相关系统的重要工具。一个这样的系统就是Bose-Hubbard模型，可以使用具有Delta功能相互作用的光学晶格中的原子来实现。我们报告了Bose-Hubbard模型的两个特征的第一个实验观察结果：通过激发带和异地接触相互作用中的虚拟分子的superexchange。绝热扫描证实了这种分子的创造，体现了一种新型的Feshbach共振。
Simple, paradigmatic systems are important tools in understanding strongly correlated systems. One such system is the Bose-Hubbard model, which can be realized using atoms in optical lattices with delta-function interactions. We report the first experimental observation of two features of the Bose-Hubbard model: superexchange via virtual molecules in excited bands and off-site contact interactions. Adiabatic sweeps confirm the creation of such molecules, exemplifying a new kind of Feshbach resonance.
