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

• Quantum Optics • Previous Articles     Next Articles

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

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

CLC Number: