 |
|
|
| 学术报告：Cold Atoms in Synthetic Gauge Field |
Cold Atoms in Synthetic Gauge Field
清华大学高等研究中心
翟荟 研究员
地点：主楼六楼会议室
时间：5月6号9：00-11：30
报告摘要
A charged quantum system subjected to high magnetic fields often exhibits unusual phenomena such as integer and fractional quantum Hall effect. Although atoms are neutral, a synthetic gauge field for atoms can be generated by engineering atom-light interaction. A pioneering experiment by Ian Speilman’s group in NIST has successfully implemented this scheme in Rb-87 Bose-Einstein condensates (Nature, 462, 628 (2009)).
This method potentially can create a sufficient large magnetic field to generate quantum Hall state in cold atoms. Combining with optical lattices, one can study a wide range of ultra-high field phenomena not accessible by real magnetic field in solids, namely, the magnetic flux through a unit cell is a sizable fraction of flux quanta. The properties of quantum many-body systems in such regime are barely explored and will surely lead to many fascinating phenomena. I shall give couple such examples in this talk. This method can also be used to generate non-abelian external gauge field. I will present some intriguing experimental predictions for a two-component Bose-Einstein condensate in one of the simplest non-abelian gauge field.
|
|
 |
|
