Collective emission of light by atomic ensembles
讲座名称：
Collective emission of light by atomic ensembles
讲座时间：
2013-06-03
讲座人：
Anatoly A. Svidzinsky
形式：
校区：
兴庆校区
实践学分：
讲座内容：
讲座名称： Collective emission of light by atomic ensembles
讲座时间： 2013年6月03日（周一）下午 4:30-6:00
讲座地点： 理科楼202会议室
讲座人： Anatoly A. Svidzinsky, Texas A&M University,
讲座内容： Collective nature of light emission by atomic ensembles yields fascinating effects such as superradiance and radiation trapping even at the single-photon level. Photon emission is influenced by virtual transitions which lead to collective frequency shift (Lamb shift). For large samples light emission is also affected by retardation due to the finite value of the speed of light. I will discuss collective emission of a single photon from a cloud of N atoms and show the exact analytical solutions of this many-atom quantum mechanical problem for superradiant and trapped states. I will discuss how virtual and nonlocal effects modify evolution of the atomic system yielding peculiar temporal features and new kind of cavity QED. Finally, I will present our experimental observation of superradiant emission of Helium atoms inside Helium plasma.
相关视频