论文标题
观察两组分玻色凝结物中密集的碰撞孤子复合物
Observation of dense collisional soliton complexes in a two-component Bose-Einstein condensate
论文作者
论文摘要
孤子是非线性孤立波，随着时间的流逝和碰撞的形状，发生在从等离子体到光学的各种非线性培养基中。我们提出了在两个组分的原子玻色 - 因凝结物中的流体动力现象的实验和理论研究，其中孤子阵列来自基于微波脉冲的绕组技术的周期性自旋模式的印记。我们观察到随之而来的动力学，包括形状变形，暗壁孤子的出现，明显的空间频率三倍，以及与孤子碰撞相关的对比的衰减和复兴。对于最稠密的阵列，我们获得了孤子络合物，唯一的孤子会继续发生长期进化时间的碰撞，为调查原子冷凝物中的孤子气体提供了途径。
Solitons are nonlinear solitary waves which maintain their shape over time and through collisions, occurring in a variety of nonlinear media from plasmas to optics. We present an experimental and theoretical study of hydrodynamic phenomena in a two-component atomic Bose-Einstein condensate where a soliton array emerges from the imprinting of a periodic spin pattern by a microwave pulse-based winding technique. We observe the ensuing dynamics which include shape deformations, the emergence of dark-antidark solitons, apparent spatial frequency tripling, and decay and revival of contrast related to soliton collisions. For the densest arrays, we obtain soliton complexes where solitons undergo continued collisions for long evolution times providing an avenue towards the investigation of soliton gases in atomic condensates.
