报告题目：Atom interferometers for precision measurements

报 告 人：Holger Müller，Department of Physics, UC Berkeley, U.S.

报告时间：2014年5月30日上午10:00

报告地点：理科楼（一楼）C109

报告摘要：The talk will give an overview of atom interferometry experiments: tests of the equivalence principle at 10^-9 accuracy and a clock that measures time by the rest mass of cesium atoms and thus realizes the unit of mass with state of the art precision. Moreover, I will present our ongoing measurement of the ？ne structure constant. At 2×10^-9 accuracy, it is currently the world’s third best. We have since reduced the leading systematic error about 8-fold and the statistical error about 10-fold. As an outlook, we will discuss atom interferometry as a tool for measuring the acceleration of free fall of antimatter.