目南京师范大学泰州学院
毕业论文
超冷体系中的玻色-爱因斯坦凝聚
学生姓名 房杨
学 号
12110125
专 业 物理学（师范） 班 级 物
1101
指导教师
朱庆利
2015 年5 月
题
所谓超冷原子体系中的玻色-爱因斯坦凝聚，就是当温度降到临界温度以下时，所 有原子占据同一个量子态的现象。由于玻色-爱因斯坦凝聚具有非常奇妙的性质，对其 进行研究有助于人们理解和揭示量子力学中的重要问题。近年来
，物理学界取得了很大
的进步在玻色-爱因斯坦凝聚的理论和实验研究中。也有许多关于非线性结构的调查在 玻色-爱因斯坦凝聚这个新的话题中展开，如暗孤子、亮孤子,漩涡和冲击波，这是现在热 门的研究话题。
本论文简单介绍了超冷原子的概念、BEC勺由来和发展过程。然后对BEC勺理论基础 进行了详细介绍，紧接着介绍了 BEC中的涡旋级涡旋的量子反射相关的知识点。最后对 BEC勺发展和展望进行了简要分析。
关键词：涡旋；玻色-爱因斯坦凝聚；量子反射
Abstract
The so-called system of ultracold atoms in Bose - Einstein condensate , is that when the temperature drops below the critical temperature , all atoms occupy the same quantum state phenomenon . Because of its unique properties , the investigation of BECs has unanticipated impact for people to understand and exploit the important and fundamental issue in quantum mechanics . In recent years , great progress has been made in the theoretical and experimental studies of Bose — Einstein condensation . There are also many investigations about the nonlinear structures in Bose —Einstein condensation , such as dark soliton , bright soliton , vortices and shock wave , which are hot research topics nowadays .
This paper first introduces the concept of ultracold atoms , the origin of the BEC and development process . Theoretical basis of BEC and then carried on the detailed introduction , and then introduces the knowledge point of vortices and quantum reflection with vortices . Finally , the development and a outlook of the BEC is briefly analyzed .
Keywords: vortex; Bose-Einstein condensation; quantum reflection
超冷原子体系中的玻色-爱因斯坦凝聚汇总
