Collisions of dark solitons in elongated Bose-Einstein condensates.
Collisions of dark solitons in elongated Bose-Einstein condensates.
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DOI：
10.1103/physrevlett.101.120406
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发表时间：
2008-09
影响因子：
8.6
通讯作者：
S. Stellmer;C. Becker;P. Soltan-Panahi;E.-M. Richter;S. Dörscher;M. Baumert;J. Kronjäger;K. Bongs;K. Sengstock
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文献类型：
--
作者：
S. Stellmer;C. Becker;P. Soltan-Panahi;E.-M. Richter;S. Dörscher;M. Baumert;J. Kronjäger;K. Bongs;K. Sengstock
我们给出了在拉长的玻色-爱因斯坦凝聚体中产生的暗孤子迎头碰撞的实验数据。没有可辨别的相互作用被记录下来，这与孤子作为相互透明的准粒子的基本理论概念完全一致。我们的孤子产生技术允许产生不同深度的孤子；因此，可以区分它们并跟踪它们的轨迹。对一维Gross-Pitaevskii方程进行了模拟，将实验结果与平均场描述进行了比较。
We present experimental data showing the head-on collision of dark solitons generated in an elongated Bose-Einstein condensate. No discernable interaction can be recorded, in full agreement with the fundamental theoretical concepts of solitons as mutually transparent quasiparticles. Our soliton generation technique allows for the creation of solitons with different depths; hence, they can be distinguished and their trajectories be followed. Simulations of the 1D-Gross-Pitaevskii equation have been performed to compare the experiment with a mean-field description.