论文标题
旋转轨道耦合的玻色菌冷凝物中的非铁皮皮肤效应
Non-Hermitian skin effect in a spin-orbit-coupled Bose-Einstein condensate
论文作者
论文摘要
我们研究了经受非旋转轨道耦合的超电原子的玻色网凝结物，在该耦合中，该系统在旋转轨道偶联和激光诱导的原子损失的相互作用下获得了非铁皮皮肤效应。在周期性边界条件下的光谱绕组，在开放边界条件下边界处的特征波峰的积累以及由方向流动信号的块状动力学，通过光谱绕组的键来证实非铁皮皮肤效应的存在。我们表明，批量动态尤其是实验检测的方便信号。还基于非弱点毛比特斯基方程讨论了相互作用和陷阱电位的影响。我们的工作表明，非富甲皮肤效应及其在拓扑，动力学及其他方面的丰富含义在当前的冷原子实验范围内。
We study a Bose-Einstein condensate of ultracold atoms subject to a non-Hermitian spin-orbit coupling, where the system acquires non-Hermitian skin effect under the interplay of spin-orbit coupling and laser-induced atom loss. The presence of the non-Hermitian skin effect is confirmed through its key signatures in term of the spectral winding under the periodic boundary condition, the accumulation of eigen wavefunctions at boundaries under an open boundary condition, as well as bulk dynamics signaled by a directional flow. We show that the bulk dynamics in particular serves as a convenient signal for experimental detection. The impact of interaction and trapping potentials are also discussed based on non-Hermitian Gross-Pitaevskii equations. Our work demonstrates that the non-Hermitian skin effect and its rich implications in topology, dynamics and beyond are well within reach of current cold-atom experiments.
