Magnetic Solitons in a Spin-1 Bose-Einstein Condensate
Magnetic Solitons in a Spin-1 Bose-Einstein Condensate
复制标题
DOI：
10.1103/physrevlett.125.030402
复制
发表时间：
2020-07-15
影响因子：
8.6
通讯作者：
Raman, C.
中科院分区：
文献类型：
--
作者：
Chai, X.;Lao, D.;Raman, C.
矢量孤子是一种存在于多分量非线性介质中的孤立波或非扩散波包。因此，可以构建各种合成系统来探索它们的特性，从非线性光学到超冷原子，甚至在超材料中。玻色-爱因斯坦凝聚体具有丰富的内部超精细能级或自旋分量，这使它们成为探索这些孤立波的独特平台。然而，现有的实验工作主要集中在二进制系统局限于Manakov限制的非线性方程的孤子行为，量子磁性不起作用。在这里，我们使用“磁阴影”技术观察到旋量玻色-爱因斯坦凝聚体中的一种新型孤立子，这种孤立子仅当底层相互作用是反铁磁时才存在，并且深深嵌入完整的自旋1量子系统中。我们的方法开辟了一个远景，为未来的研究“孤子物质”，即多个孤子相互作用，在确定性的位置。
Vector solitons are a type of solitary or nonspreading wave packet occurring in a nonlinear medium composed of multiple components. As such, a variety of synthetic systems can be constructed to explore their properties, from nonlinear optics to ultracold atoms, and even in metamaterials. Bose-Einstein condensates have a rich panoply of internal hyperfine levels, or spin components, which make them a unique platform for exploring these solitary waves. However, existing experimental work has focused largely on binary systems confined to the Manakov limit of the nonlinear equations governing the soliton behavior, where quantum magnetism plays no role. Here we observe, using a "magnetic shadowing" technique, a new type of soliton in a spinor Bose-Einstein condensate, one that exists only when the underlying interactions are antiferromagnetic and which is deeply embedded within a full spin-1 quantum system. Our approach opens up a vista for future studies of "solitonic matter" whereby multiple solitons interact with one another at deterministic locations.