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玻色-爱因斯坦凝聚体:宇宙中最冷的物质Bose-Einstein Condensates: The Coldest Matter in the Universe |
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| 课程网址: | http://videolectures.net/mitworld_ketterle_bec/ |
| 主讲教师: | Wolfgang Ketterle |
| 开课单位: | 麻省理工学院 |
| 开课时间: | 2010-06-08 |
| 课程语种: | 英语 |
| 中文简介: | 当气体冷却到绝对零度时会发生什么?一扇通往量子世界的新大门打开了,因为所有的原子开始“步调一致”,形成一个巨大的物质波——玻色-爱因斯坦凝聚体。爱因斯坦在1925年就预测到了这一点,但直到1995年在博尔德的JILA实验室和麻省理工学院的实验室才实现了这一点。从那时起,这种神秘的物质形式的许多特性被揭示出来,包括物质波放大和量子化旋涡。玻色凝聚体被用来实现基本原子激光,一种相干物质波的强源。 |
| 课程简介: | What happens when a gas is cooled to absolute zero? A new door to the quantum world opens up because all the atoms start "marching in lockstep", forming one giant matter wave the Bose-Einstein condensate. This was predicted by Einstein in 1925, but only realized in 1995 in laboratories at JILA in Boulder and at MIT. Since then, many properties of this mysterious form of matter have been revealed, including matter wave amplification and quantized vortices. Bose condensates have been used to realize a basic atom laser, an intense source of coherent matter waves. |
| 关 键 词: | 宇宙; 最冷的物质; 基本原子激光 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2020-11-30:yxd |
| 最后编审: | 2021-09-15:zyk |
| 阅读次数: | 138 |
