论文标题
相关的拓扑泵送相互作用的玻色子，由Bloch振荡辅助
Correlated topological pumping of interacting bosons assisted by Bloch oscillations
论文作者
论文摘要
无需抽水，不仅可以实现量化的运输，而且还可以免疫中度疾病，这在实验和理论中都引起了人们的关注。在这里，我们探讨了颗粒粒子相互作用如何在定期调节和倾斜的光学晶格中影响拓扑转运。不限于Wannier状态，我们的方案也确保了无分散的量化传输，即使对于不均匀占用给定带的初始高斯样波包的相互作用玻色子的初始传输。这是因为倾斜电位导致Bloch振荡均匀地对整个Brillouin区域上的浆果曲率进行采样。现场电势差，隧道率和相互作用之间的相互作用有助于结合和散射状态以及拓扑共振的隧道的拓扑运输。我们的研究加深对相关效应对拓扑状态的理解，并为检测相互作用系统中拓扑特性提供了一种可行的方式。
Thouless pumping, not only achieving quantized transport but also immune to moderate disorder, has attracted growing attention in both experiments and theories. Here, we explore how particle-particle interactions affect topological transport in a periodically-modulated and tilted optical lattice. Not limited to wannier states, our scheme ensures a dispersionless quantized transport even for initial Gaussian-like wave packets of interacting bosons which do not uniformly occupy a given band. This is because the tilting potential leads to Bloch oscillations uniformly sampling the Berry curvatures over the entire Brillouin zone. The interplay among on-site potential difference, tunneling rate and interactions contributes to the topological transport of bound and scattering states and the topologically resonant tunnelings. Our study deepens the understanding of correlation effects on topological states, and provides a feasible way for detecting topological properties in interacting systems.
