Measurement of Heating Rates in a Microscopic Surface-Electrode Ion Trap  

作　　者：何九洲 闫磊磊 陈亮 李冀 冯芒 

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, Wuhan 430071 [2]University of the Chinese Academy of Sciences, Beijing 100049

出　　处：《Chinese Physics Letters》2017年第6期40-43,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 Y5Z2111001,91421111 and 11674360

摘　　要：We report measurement of heating rates of 40 Ca＋ ions confined in our home-made microscopic surface-electrode trap by a Doppler recooling method. The ions are trapped with approximately 800 μm above the surface, and are subjected to heating due to various noises in the trap. There are 3-5 ions involved to measure the heating rates precisely and efficiently. We show the heating rates in variance with the number and the position of the ions as well as the radio-frequency power, which are helpful for understanding the trap imperfection.We report measurement of heating rates of 40 Ca＋ ions confined in our home-made microscopic surface-electrode trap by a Doppler recooling method. The ions are trapped with approximately 800 μm above the surface, and are subjected to heating due to various noises in the trap. There are 3-5 ions involved to measure the heating rates precisely and efficiently. We show the heating rates in variance with the number and the position of the ions as well as the radio-frequency power, which are helpful for understanding the trap imperfection.

关 键 词：Measurement of Heating Rates in a Microscopic Surface-Electrode Ion Trap 

分 类 号：O562[理学—原子与分子物理]