文档介绍：(2012届)
本科毕业设计(论文)资料
题目名称:
玻色-爱因斯坦凝聚的研究历史及实验实现
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湖南工业大学教务处
2012届
本科毕业设计(论文)资料
第一部分毕业论文
(2012届)
本科毕业设计(论文)
玻色-爱因斯坦凝聚的研究历史及实验实现
学院(部):
专业:
学生姓名:
班级:
学号
指导教师姓名:
职称
最终评定成绩
2012年 5 月
摘要
玻色-爱因斯坦凝聚是在低温下,不同状态的原子突然“凝聚”到同一状态的现象。本文针对玻色-爱因斯坦凝聚这一课题,综述了玻色-爱因斯坦凝聚的研究历史和凝聚体实验的实现。通过玻色-爱因斯坦凝聚理论的诞生、发展、瓶颈和突破这四部分来描述其研究历史。凝聚体实验实现方面,随着激光冷却囚禁技术、静磁阱技术、蒸发冷却技术还有BEC检测技术的发展,我们实现了玻色-爱因斯坦凝聚。1995年,随着JILA小组、MIT小组、Rice大学的实验成功,玻色-爱因斯坦凝聚的热浪被推向了最高潮。本文中我们还通过理论研究了解形成玻色-爱因斯坦凝聚的物理条件,并推导凝聚体在平均场理论下的Gross-Pitaevskii方程。
超冷玻色-爱因斯坦凝聚体在原子激光的输出、原子量子态的实验制备、精确测量、芯片技术、探测等技术上都有非常好的应用,未来的前景非常广阔。
关键词:玻色-爱因斯坦凝聚,激光,静磁阱,非线性薛定谔方程,凝聚体应用
ABSTRACT
Bose-Einstein condensation is the phenomenon that at low temperatures, the different states of atoms suddenly “condense” to the same state. In this paper, we have reviewed the history and experiments of Bose - Einstein condensation. There are four parts to describe the study of history: the birth of Bose-Einstein condensation theory, the development, the bottlenecks and the breakthroughs. With the help of laser cooling technology, the development of the static ic trap, evaporative cooling technology and the detection technology, we have achieve the experimental realization of Bose-Einstein condensation. Shortly after the first experimental realization of the JILA group, the MIT group at Rice University in 1995, intense efforts have been devoted to the study of Bose-Einstein condensation. In the paper, we have researched the formation of a Bose-Einstein condensation of the physical conditions in theory, and deduced the nonlinear Schrodinger equation of the condensates in the mean field theory.
Ultra cold Bose - Einstein condensates have a very good application and very broad prospects for the future in the output of the atom laser, the experimental preparation of atomic quantum state, precise measurements, the chip technology and detection technology.
Keywords: Bose-Einstei