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谁来讲十分钟:Holes block light in very thin films
2009-11-19 08:43
谁来讲十分钟: Holes block light in very thin films Nov 17, 2009 What happens if you drill an array of tiny holes into a metal foil and then measure how much light the holes allow through? It turns out as physicists discovered back in 1998 that much more is tran ...
个人分类: 讨论班课题推荐|3075 次阅读|没有评论
谁来讲十分钟:Photo finish in race for strontium condensate
2009-11-19 08:37
谁来讲十分钟: Photo finish in race for strontium condensate Nov 18, 2009 An expanding field An Austrian group has beaten its US counterpart by a matter of days in a race to create a Bose-Einstein condensate (BEC) of strontium atoms. Research ...
个人分类: 讨论班课题推荐|3059 次阅读|没有评论
小道消息:实验证实“任意子”分数统计(邱荣涛)09.11.19
2009-11-12 21:21
实验证实任意子分数统计 邱荣涛 2009年11月19日下午4:30-6:1018教学楼405 Anyons are exotic quasiparticles living in two dimensions that do not fit into the usual categories of fermions and bosons, but obey a new form of fractional statistics. Following a rec ...
个人分类: 小道消息区|2768 次阅读|没有评论
谁来讲十分钟:There and back again: from magnets to superconductors
2009-11-10 19:44
谁来讲十分钟: There and back again: from magnets to superconductors A theory of novel phase formation near quantum critical points suggests that large fluctuations lead to magnetic analogs of inhomogeneous superconductivity. 详细 文献: G. J. Conduit, A. G. Green, and B. D. S ...
个人分类: 讨论班课题推荐|2456 次阅读|没有评论
谁来讲十分钟:Ultracold fermions in a graphene-type optical lattice
2009-11-7 17:15
Ultracold fermions in a graphene-type optical lattice Kean Loon Lee (李健伦), Benot Grmaud, Rui Han (韩睿), Berthold-Georg Englert, and Christian Miniatura Phys. Rev. A 80, 043411 (Published October 19, 2009) Two highly active fields of physics have merged in recent years, ...
个人分类: 讨论班课题推荐|3230 次阅读|没有评论
讨论班:密码故事(二):经典密码与量子密码(宋词)09.11.12
2009-11-6 09:07
讨论班:密码故事(二):经典密码与量子密码(宋词)09.11.512 时间:2009.11.5 下午 4:306:10 地点:18教学楼405室 主讲:宋词 题目:密码故事 内容简介: 密码系统由两部分组成: 1. 加密算法 2. ...
个人分类: 周四讨论班|3091 次阅读|没有评论
小道消息:Universe's quantum 'speed bumps' no obstacle for light (董成伟)09.11.12
2009-11-5 07:59
Universe's quantum 'speed bumps' no obstacle for light A hint that quantum fluctuations in the fabric of the universe slow the speed of light has not been borne out in observations by NASA's Fermi telescope. The measurements contradict a 2005 result that supported the idea that spac ...
个人分类: 小道消息区|3531 次阅读|没有评论
小道消息:Accelerating neutral atoms (邱荣涛)
2009-11-2 10:19
小道消息: Accelerating neutral atoms (邱荣涛) The intensity gradients of inhomogeneous laser-light fields impose ponderomotive forces on charged particles. Such forces have been used to trap and manipulate ions, diffract electrons, and generate charge waves in plasmas. But they were tho ...
个人分类: 讨论班课题推荐|2901 次阅读|1 个评论
讨论班(有讲稿):近场光学(刘丽彦)09.12.17
2009-10-29 21:13
周四讨论班:近场光学 时间:2009.12.17. 下午 4:306:10 地点:18教学楼405室 主讲:刘丽彦 刘丽彦的讲稿 推荐文献(你也可以自己找其他相关文献): 1) C. Girardy and A. Dereux, Near-field optics theories, Rep. Prog. Phys. 59 (1996) 657699. (这是一篇综述) 2) ...
个人分类: 周四讨论班|2747 次阅读|没有评论
谁来讲十分钟:Nearly perfect fluidity
2009-10-28 08:29
谁来讲十分钟: Nearly perfect fluidity Thomas Schfer Is there a fundamental lower bound on viscosity? To answer this question, we can look at the coldest and hottest fluids that laboratories are able to produce. From everyday experience, we have an intuitive feel for how a &ld ...
个人分类: 讨论班课题推荐|2566 次阅读|没有评论

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