Controlled formation and reflection of a bright solitary matter-wave.
Controlled formation and reflection of a bright solitary matter-wave.
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DOI：
10.1038/ncomms2893
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发表时间：
2013
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
亮孤子是一种非色散波解，存在于各种非线性一维系统中，包括具有吸引相互作用的原子玻色-爱因斯坦凝聚。在现实中，冷原子实验只能接近实现真正的孤子所必需的理想化的一维极限。尽管如此，仍然有可能创造出明亮的孤立波，孤立波的三维模拟，它保持了一维对应物的许多关键特性。这种孤立波提供了许多潜在的应用，并为多体量子系统的理论处理提供了丰富的测试基础。在这里，我们报告了一个明亮的孤立物质波的控制形成从玻色-爱因斯坦凝聚体的85 Rb，这是观察到传播超过1.1毫米的距离在150毫秒，没有可观察到的色散。我们证明了孤立波的反射从排斥高斯障碍和对比这排斥凝聚的情况下，在这两种情况下，发现很好的协议与理论模拟使用的三维Gross-Pitaevskii方程。 玻色-爱因斯坦凝聚体中的亮孤波类似于传统波系统中的孤波，并且可能使多体量子系统的有趣测试成为可能。使用85 Rb，Marchant等人展示了明亮孤立物质波的受控形成，以及它们从排斥屏障的反射。
Bright solitons are non-dispersive wave solutions, arising in a diverse range of nonlinear, one-dimensional systems, including atomic Bose–Einstein condensates with attractive interactions. In reality, cold-atom experiments can only approach the idealized one-dimensional limit necessary for the realization of true solitons. Nevertheless, it remains possible to create bright solitary waves, the three-dimensional analogue of solitons, which maintain many of the key properties of their one-dimensional counterparts. Such solitary waves offer many potential applications and provide a rich testing ground for theoretical treatments of many-body quantum systems. Here we report the controlled formation of a bright solitary matter-wave from a Bose–Einstein condensate of 85Rb, which is observed to propagate over a distance of ∼1.1 mm in 150 ms with no observable dispersion. We demonstrate the reflection of a solitary wave from a repulsive Gaussian barrier and contrast this to the case of a repulsive condensate, in both cases finding excellent agreement with theoretical simulations using the three-dimensional Gross–Pitaevskii equation. Bright solitary waves in Bose–Einstein condensates are analogues of solitons in conventional wave systems, and may enable interesting tests of many-body quantum systems. Using 85Rb, Marchant et al. show the controlled formation of bright solitary matter-waves, and their reflection from a repulsive barrier.
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影响因子：
5
作者：
Dimopoulos, S;Geraci, AA
通讯作者：
Geraci, AA
影响因子：
2.9
作者：
Marchant, A. L.;Haendel, S.;Cornish, S. L.
通讯作者：
Cornish, S. L.
影响因子：
8.6
作者：
Al Khawaja, U;Stoof, HTC;Partridge, GB
通讯作者：
Partridge, GB
影响因子：
2.9
作者：
Billam, T. P.;Cornish, S. L.;Gardiner, S. A.
通讯作者：
Gardiner, S. A.
影响因子：
2.9
作者：
Helm, J. L.;Billam, T. P.;Gardiner, S. A.
通讯作者：
Gardiner, S. A.