J4 ›› 2018, Vol. 35 ›› Issue (4): 424-431.

• 量子光学 • 上一篇    下一篇

分段线形离子阱中离子的囚禁及微运动补偿

潘勇,李海霞,何胜国,童昕   

  1. 1 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室, 湖北 武汉 430071; 2 中国科学院武汉物理与数学研究所中国科学院原子频标重点实验室, 湖北 武汉 430071; 3 中国科学院大学, 北京 100049
  • 收稿日期:2017-04-28 修回日期:2017-06-05 出版日期:2018-07-28 发布日期:2018-07-12
  • 通讯作者: 童 昕(1977-),湖北人,研究员,从事冷分子离子与精密谱测量方面的研究。 E-mail:tongxin@wipm.ac.cn
  • 作者简介:潘 勇(1992-),湖北人,研究生,从事冷分子离子与精密谱测量方面的研究。E-mail:panyong@wipm.ac.cn
  • 基金资助:

    Supported by National Natural Science Foundation of China (国家自然科学基金, 11474317)

Trapping and micromotion compensation of ions in segmented linear ion trap

PAN Yong, LI Haixia, HE Shengguo, TONG Xin   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; 2 Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; 3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-04-28 Revised:2017-06-05 Published:2018-07-28 Online:2018-07-12

摘要:

设计了一套用于分段线形离子阱囚禁离子及微运动补偿的射频-静电耦合电源电路,实现了钙离子在离子阱中的囚禁。通过CCD相机观察离子发出的荧光确定离子晶体位置。利用离子阱中12段极杆上静态电压的独立控制实现了离子晶体在三维空间中的精密控制,减小了射频调制的微运动。此离子囚禁系统可进一步确定离子晶体的物理性质,如离子的宏运动频率、离子晶体的温度分布等,并实现多组份离子晶体的囚禁。

关键词: 线形离子阱;微运动补偿;射频电源;程控直流电源

Abstract:

A set of RF-electrostatic coupling power supply circuit for segmented linear ion trap is designed for trapping ions and micromotion compensation. The trapping of calcium ions in ion trap is realized. The ion crystal position is determined by observing the fluorescence emitted by ions with CCD camera. The precise control of the ion crystal in three-dimensional space is realized by controlling the static voltage on the 12-segment poles in the ion trap independently, which reduces the micromotion caused by RF modulation. The ions trapping system can further determine the physical properties of ion crystals, such as the secular motion frequency of ions in the ion trap, temperature distribution of ion crystal, and the trapping of multi-component ion crystal.

Key words: linear ion trap;micromotion compensation;RF power supply;programmable DC power supply

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