学术报告第170期:Superresolution imaging of atoms at 10 nm scale in optical lattices
星期五, 2019/12/27 - 14:00 to 15:00
主讲人 (Speaker):
金政
主讲人单位 (Speaker's Institute):
美国芝加哥大学物理系
邀请人 (Invited by):
罗乐
时间 (Time):
星期五, 2019/12/27 - 14:00 to 15:00
地点 (Location):
珠海校区海滨红楼17栋107 (Rm 107, Red House 17)
摘要 (Abstract):
Superresolution microscopy has revolutionized the fields of chemistry and biology by resolving features at the molecular level. In atomic physics, such a scheme can be applied to resolve the atomic density distribution beyond the diffraction limit and to perform quantum control. Here we demonstrate superresolution imaging based on the nonlinear response of atoms to an optical pumping pulse. With this technique, the atomic density distribution can be imaged with a full-width-at-half-maximum resolution of 32(4) nm and a localization precision below 500 pm. The short optical pumping pulse of 1.4 μs enables us to resolve fast atomic dynamics within a single lattice site. An intriguing by-product of our scheme is the emergence of moiré patterns on the atomic cloud, which we show to be immensely magnified images of the atomic density in the lattice.
主讲人简介 (Speaker's CV):
教育: • 1995-2001: 美国斯坦福大学物理系博士 • 1990-1993:台湾大学物理系学士 工作: • 2013-至今: 美国芝加哥大学物理系教授(恩里科·费米研究所和詹姆斯·弗兰克研究所) • 2009-2012: 美国芝加哥大学物理系副教授(詹姆斯·弗兰克研究所) • 2005-2008: 美国芝加哥大学物理系助理教授(詹姆斯·弗兰克研究所) • 2003-2005:奥地利因斯布鲁克大学,访问学者 • 2001-2003:美国斯坦福大学博士后 荣誉: • 2017年获得Bose-Einstein Condensation Award奖