Compensating for excess micromotion of ion crystals  

作　　者：杜丽军 陈婷 宋红芳 陈邵龙 李海霞 黄垚 童昕 管桦 高克林 

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences [2]Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences [3]University of Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第8期311-316,共6页中国物理B（英文版）

基　　金：supported by the National Basic Research Program of China(Grant Nos.2012CB821301 and 2010CB832803);the National Natural Science Foundation of China(Grant Nos.11004222 and 91121016);the Fund from Chinese Academy of Sciences

摘　　要：A new method of compensating for the excess micromotion along two directions in three-dimensional Coulomb crystals is reported in this paper; this method is based on shape control and optical imaging of a Coulomb crystal in a sectioned linear ion trap. The characteristic parameters, such as the ion numbers, temperatures, and geometric factors of different ion crystals are extracted from the images and secular motion excitation spectra. The method of controlling the shape of the ion crystals can be used in cold ion experiments, such as sympathetically cooling, structural phase transitions,and selective-control of ions, etc.A new method of compensating for the excess micromotion along two directions in three-dimensional Coulomb crystals is reported in this paper; this method is based on shape control and optical imaging of a Coulomb crystal in a sectioned linear ion trap. The characteristic parameters, such as the ion numbers, temperatures, and geometric factors of different ion crystals are extracted from the images and secular motion excitation spectra. The method of controlling the shape of the ion crystals can be used in cold ion experiments, such as sympathetically cooling, structural phase transitions,and selective-control of ions, etc.

关 键 词：ion crystals excess micromotion secular motion exciting 

分 类 号：O562[理学—原子与分子物理]