Prof. Guang-Ri Jin (金光日)
Department of Physics, Beijing Jiaotong University 

Abstract: A general formula of spin squeezing for SU(2) systems are developed, which is useful to understand a lot of squeezing experiments. According to recent experimental progresses, we propose a simple idea to realize spin squeezing by two-axis twisting, which may be useful to improve the phase sensitivity up to Heisenberg limit. The applications of spin squeezing will be discussed for a linear/nonlinear interferometry.

报告人简介：金光日，1973年3月生，吉林省图们人。2002年，毕业于中国科学院理论物理研究所（导师：孙昌璞院士），获理学博士。2007年至今，任职于北京交通大学物理系，副教授、博士生导师。研究兴趣有：量子光学和量子信息、玻色—爱因斯坦凝聚等。

 Date&Time: April 25, 2012 (Wednesday) 15:00 – 16:00
Location: 606 Conference Room