论文标题

量化的拓扑安德森 - 无尽泵

Quantized Topological Anderson-Thouless Pump

论文作者

Wu, Yi-Piao, Tang, Ling-Zhi, Zhang, Guo-Qing, Zhang, Dan-Wei

论文摘要

用量化运输的无泵在拓扑上对小的扰动和疾病具有良好的态度,而在足够强的疾病下则分解。在这里,我们提出了由非相互作用和相互作用系统中的疾病引起的违反直觉拓扑泵。我们首先显示了一个外部拓扑泵,该泵由两循环序列的现场准静脉电势驱动,在该序列中,该疾病不相等地抑制了两个泵回路的拓扑结构。此外,我们揭示了一个固有的拓扑泵,这是由小型单环泵在干净限制中引起的ic酸碘疾病引起的,被称为拓扑式安德森 - 豪华泵(TATP),作为拓扑安德森绝缘子的动力类似物。我们证明了TATP的机制是无骨临界点的疾病诱导的转移,而TATP甚至可以在动态障碍和相互作用的病例中表现出来。最后,我们将TATP扩展到具有无序诱导的量角传输的高阶拓扑系统。我们提出的TATP介绍了拓扑泵家族的新成员,可以用超低原子或光子波导实现。

Thouless pump with quantized transports is topologically robust against small perturbations and disorders, while breaks down under sufficiently strong disorders. Here we propose counter-intuitive topological pumps induced by disorders in noninteracting and interacting systems. We first show an extrinsic topological pump driven by the on-site quasiperiodic potential for a two-loop sequence, where the disorder inequivalently suppresses the topology of two pump loops. Moreover, we reveal an intrinsic topological pump induced by the hopping quasiperiodic disorder from a trivial single-loop pump in the clean limit, dubbed the topological Anderson-Thouless pump (TATP) as a dynamical analogue of topological Anderson insulators. We demonstrate that the mechanism of the TATP is the disorder-induced shift of gapless critical points and the TATP can even exhibit in the dynamic disorder and interacting cases. Finally, we extend the TATP to higher-order topological systems with disorder-induced quantized corner transports. Our proposed TATPs present new members of the topological pump family and could be realized with ultracold atoms or photonic waveguides.

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