论文标题
在光学拉曼晶格中实现和检测非共性临界阶段
Realization and detection of non-ergodic critical phases in optical Raman lattice
论文作者
论文摘要
临界阶段被离域但非共性阶段是基本阶段，与多体定位和ergodic的扩展量子阶段不同，到目前为止在实验中尚未实现。在这里，我们建议基于拓扑光学拉曼晶格方案实现有或没有相互作用的临界阶段，该方案具有一维自旋轨道耦合和不一致的Zeeman潜力。我们证明了非相互作用和多体临界阶段的存在，它们可以与拓扑阶段共存，并表明临界 - 平局过渡与非互动制度中的拓扑相边界一致。提出并详细研究了临界阶段的动态检测。最后，我们证明了如何根据当前的冷原子实验来实现所提出的临界相。这项工作为观察新的临界阶段铺平了道路。
The critical phases, being delocalized but non-ergodic, are fundamental phases which are different from both the many-body localization and ergodic extended quantum phases, and have so far not been realized in experiment. Here we propose to realize such critical phases with and without interaction based on a topological optical Raman lattice scheme, which possesses one-dimensional spin-orbit coupling and an incommensurate Zeeman potential. We demonstrate the existence of both the noninteracting and many-body critical phases, which can coexist with the topological phase, and show that the critical-localization transition coincides with the topological phase boundary in noninteracting regime. The dynamical detection of the critical phases is proposed and studied in detail. Finally, we demonstrate how the proposed critical phases can be achieved based on the current cold atom experiments. This work paves the way to observe the novel critical phases.
