中国物理B ›› 2012, Vol. 21 ›› Issue (6): 63201-063201.doi: 10.1088/1674-1056/21/6/063201

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Linear ion trap imperfection and the compensation of excess micromotion

谢艺a b, 万威a b, 周飞a, 陈亮a, 李朝红c, 冯芒a   

  1. a. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, and Wuhan National Laboratory for Optoelectronics, Wuhan 430071, China;
    b. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;
    c. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
  • 收稿日期:2011-11-30 修回日期:2012-01-05 出版日期:2012-05-01 发布日期:2012-05-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 10974225 and 11104325), the NCETPC (Grant No. NCET-10-0850), the Fundamental Research Funds for Central Universities of China, and the National Fundamental Research Program of China (Grant No. 2012CB922102).

Linear ion trap imperfection and the compensation of excess micromotion

Xie Yi(谢艺)a)b), Wan Wei(万威)a)b), Zhou Fei(周飞)a), Chen Liang(陈亮)a), Li Chao-Hong(李朝红) c), and Feng Mang(冯芒)a)†   

  1. a. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, and Wuhan National Laboratory for Optoelectronics, Wuhan 430071, China;
    b. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;
    c. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2011-11-30 Revised:2012-01-05 Online:2012-05-01 Published:2012-05-01
  • Contact: Feng Mang E-mail:mangfeng@wipm.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 10974225 and 11104325), the NCETPC (Grant No. NCET-10-0850), the Fundamental Research Funds for Central Universities of China, and the National Fundamental Research Program of China (Grant No. 2012CB922102).

摘要: Quantum computing requires ultracold ions in a ground vibrational state, which is achieved by sideband cooling. We report our recent efforts towards the Lamb-Dicke regime which is a prerequisite of sideband cooling. We first analyse the possible imperfection in our linear ion trap setup and then demonstrate how to suppress the imperfection by compensating the excess micromotion of the ions. The ions, after the micromotion compensation, are estimated to be very close to the Doppler-cooling limit.

关键词: trapped ions, micromotion, compensation

Abstract: Quantum computing requires ultracold ions in a ground vibrational state, which is achieved by sideband cooling. We report our recent efforts towards the Lamb-Dicke regime which is a prerequisite of sideband cooling. We first analyse the possible imperfection in our linear ion trap setup and then demonstrate how to suppress the imperfection by compensating the excess micromotion of the ions. The ions, after the micromotion compensation, are estimated to be very close to the Doppler-cooling limit.

Key words: trapped ions, micromotion, compensation

中图分类号:  (Other multiphoton processes)

  • 32.80.Wr
03.67.Lx (Quantum computation architectures and implementations) 32.70.Jz (Line shapes, widths, and shifts) 42.62.Fi (Laser spectroscopy)