论文标题
$^{87} $ rb偶极旋转纺纱剂玻色 - 因凝结物中的光插入式旋转旋转涡流
Optical-plug-assisted spin vortex in a $^{87}$Rb dipolar spinor Bose-Einstein condensate
论文作者
论文摘要
以$^{87} $ rb偶极纺纱子bose-Einstein冷凝物以可控的方式产生自旋涡旋仍然在实验上具有挑战性。我们提出了一种实验上简单且可调的方法，以改变潜在的屏障高度和另外施加的光插头的宽度，从而产生自旋涡流。随着屏障高度的增加，拓扑辅助 - 涡流阶段是从微不足道的单模式近似阶段到光插入式辅助涡流的拓扑相变的，因为屏障高度增加，宽度位于适当的范围内。光插头引起的径向密度变化，因此自旋涡流通过显着降低固有的磁性偶极能而受到青睐。我们的数值结果预测了一种与常规极性核心涡流不同的一种无矫正自旋涡旋。我们的建议消除了研究$^{87} $ rb偶极旋转器BEC中拓扑相变的主要障碍。
Generating a spin vortex in a $^{87}$Rb dipolar spinor Bose-Einstein condensate in a controllable way is still experimentally challenging. We propose an experimentally easy and tunable way to produce spin vortex by varying the potential barrier height and the width of an additionally applied optical plug. A topological phase transition occurs from the trivial single mode approximation phase to the optical-plug-assisted-vortex one, as the barrier height increases and the width lies in an appropriate range. The optical plug causes radial density variation thus the spin vortex is favored by significantly lowering the intrinsic magnetic dipolar energy. A type of coreless spin vortex, different from the conventional polar core vortex, is predicted by our numerical results. Our proposal removes a major obstacle to investigate the topological phase transition in a $^{87}$Rb dipolar spinor BEC.
