Towards the study of topological defects in 87-Rubidium Bose-Einstein condensate

87-铷玻色-爱因斯坦凝聚体拓扑缺陷的研究

• 批准号: 2126858
• 金额: --
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2126858
• 关键词: Towards; study; topological; defects; 87

This project is totally experimental. The set-up generates a 3-dimensional 87-Rb Bose-Einstein condensate by all-optical methods. This means that rubidium atoms macroscopically occupy the lowest energy state below a certain critical temperature showing a collective behaviour. The main objective of the project is the study of different kind of non-linear dynamic effects over the condensate. These dynamics depend on the type of interactions between the bosons which give rise to vortices or solitons, for example. These two phenomena are well studied theoretically and experimentally and they are the first cases which will be studied first in our experiment. When this first objective will be reached, more complex cases will be studied. In order to generate these complex effects it is necessary an opto-electronic device called spatial light modulator (SLM). This device allows the emission of any kind of light pattern when is shined by a laser source. This pattern will be interact with the atoms of the condensate given rise to these non-linear dynamics. This device is currently installed in the set-up and it is being tested in order to reproduce the mentioned cases. Note: the student has now transferred to a master's degree.

这个项目完全是实验性的。该装置通过全光学方法产生三维87-Rb玻色-爱因斯坦凝聚体。这意味着铷原子在宏观上占据了低于某一临界温度的最低能量状态，表现出集体行为。该项目的主要目标是研究凝析油的各种非线性动力学效应。这些动力学依赖于玻色子之间的相互作用类型，例如，产生涡旋或孤子。这两种现象在理论和实验上都得到了很好的研究，它们是我们实验中首先研究的第一种情况。在达到第一个目标后，将研究更复杂的案件。为了产生这些复杂的效果，需要一种称为空间光调制器（SLM）的光电器件。当被激光源照射时，该装置允许发射任何类型的光图案。这种模式将与凝聚体的原子相互作用，产生这些非线性动力学。该装置目前已安装在装置中，正在进行测试，以重现上述病例。注：该生现已转读硕士。