论文标题
量子运输在一维准晶体中，具有迁移率边缘
Quantum transport in a one-dimensional quasicrystal with mobility edges
论文作者
论文摘要
探索了具有迁移率边缘的一维（1D）准静态晶格中的量子传输。我们首先通过诉诸两个边缘式边缘通道来研究左侧和右边缘模式之间的绝热泵，并证明绝热泵的成功或失败取决于相应的体积亚渠道是否经历了本地化 - 势化转变。与范式的Aubry-André（AA）模型相比，移动边缘的引入触发了两个通道中成功泵送的相反结果，显示了危重状况的差异，并促进了绝热泵送的抗Quasidisordors的稳健性。我们还考虑了在晶格的两个边界处的激发与发现以增强的准酶序列为特征的异常现象之间的转移。此外，存在一个参数状态，在迁移率边缘的存在下，非重点效应出现，这导致激发转移的单向运输，并在量子二极管的工程中实现了潜在的应用。
Quantum transport in a one-dimensional (1D) quasiperiodic lattice with mobility edges is explored. We first investigate the adiabatic pumping between left and right edge modes by resorting to two edge-bulk-edge channels and demonstrate that the success or failure of the adiabatic pumping depends on whether the corresponding bulk subchannel undergoes a localization-delocalization transition. Compared with the paradigmatic Aubry-André (AA) model, the introduction of mobility edges triggers an opposite outcome for successful pumping in the two channels, showing a discrepancy of critical condition, and facilitates the robustness of the adiabatic pumping against quasidisorder. We also consider the transfer between excitations at both boundaries of the lattice and an anomalous phenomenon characterized by the enhanced quasidisorder contributing to the excitation transfer is found. Furthermore, there exists a parametric regime where a nonreciprocal effect emerges in the presence of mobility edges, which leads to a unidirectional transport for the excitation transfer and enables potential applications in the engineering of quantum diodes.
