Cold Atom Cloud with High Optical Depth Measured with Large Duty Cycle  

作　　者：张骏 顾振杰 钱鹏 韩枝光 陈洁菲 

机构地区：[1]Department of Physics,East China Normal University

出　　处：《Chinese Physics Letters》2015年第6期96-99,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 91436211 and 11204086;the National Basic Research Program of China under Grant No 2011CB921604;the Shanghai Science and Technology Committee under Grant No 13PJ1402100

摘　　要：We present a cold atom system with a dark-line two-dimensional magneto-optical trap, to increase the atomic density by suppressing the atomic radiation pressure. Optical depth （OD） and duty cycle are used to evaluate the system performance. We demonstrate a 100% increase in OD with the dark line, and obtain an ultrahigh OD of 264 with 10% for the duty cycle. Also, with an efficient dark line region, the OD could maintain above i00 with duty cycle as high as 30%. The cold atomic ensemble with an ultrahigh OD with a 10%-30% duty cycle is particularly advantageous in quantum i^formation processing and communication.We present a cold atom system with a dark-line two-dimensional magneto-optical trap, to increase the atomic density by suppressing the atomic radiation pressure. Optical depth （OD） and duty cycle are used to evaluate the system performance. We demonstrate a 100% increase in OD with the dark line, and obtain an ultrahigh OD of 264 with 10% for the duty cycle. Also, with an efficient dark line region, the OD could maintain above i00 with duty cycle as high as 30%. The cold atomic ensemble with an ultrahigh OD with a 10%-30% duty cycle is particularly advantageous in quantum i^formation processing and communication.

关 键 词：Cold Atom Cloud with High Optical Depth Measured with Large Duty Cycle MOT OD 

分 类 号：O431.2[机械工程—光学工程]