宇航计测技术 ›› 2024, Vol. 44 ›› Issue (1): 14-19.doi: 10.12060/j.issn.1000-7202.2024.01.03

• 理论与前沿技术 • 上一篇    下一篇

单离子光频标离子囚禁技术

纪仟仟，韩蕾，孙婧昕，陈星，苏亚北，陈煜，申彤，丁余东，薛潇博   

  1. 北京无线电计量测试研究所，计量与校准技术重点实验室，北京 100039
  • 出版日期:2024-02-15 发布日期:2024-05-01
  • 作者简介:纪仟仟（1997-），女，助理工程师，硕士，主要研究方向：量子计量、光频标技术。

Ion Trap for Single-ion Optical Frequency Standards

JI Qianqian，HAN Lei，SUN Jingxin,CHEN Xing，SU Yabei，CHEN Yu，SHEN Tong，DING Yudong，XUE Xiaobo   

  1. Science and Technology on Metrology and Calibration Laboratory,Beijing Institute of Radio Metrology and Measurements,Beijing 100039,China
  • Online:2024-02-15 Published:2024-05-01

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摘要： 离子囚禁技术与系统是量子频标、量子计算的核心技术和核心物理参考体系，在精密测量、量子计算、高精度导航定位等领域具有重要的应用价值与应用前景。设计研制了一种基于Paul型离子阱的离子制备与囚禁系统，利用数字PID方法进行多通道多波长激光频率锁定，对离子进行光离化制备、囚禁、激光Doppler冷却。试验系统探测到了单离子的微弱荧光信号，实现了单个离子的稳定囚禁；激光频率漂移由500 MHz稳定至±0.8 MHz，激光冷却温度达到5.53 mK，趋于Doppler冷却极限。

关键词: 离子囚禁, 激光多普勒冷却, 光离化, 光频标

Abstract: As the core technology and physical reference system of quantum frequency standards and quantum computing,ion trap has important application prospect and plays an important role in the fields of precision measurement,quantum computing,and high precision positioning and navigation.An ion preparation and trap system based on Paul ion trap is proposed for photo-ionization,ion-trap and laser Doppler cooling.The multi-channel and multi-wavelength laser frequencies are stabilized with a digital PID control method.In the experimental system,the weak fluorescence signal of single-ion is detected representing the single-ion is trapped.The laser frequency drift is stabilized from 500 MHz to ±0.8 MHz.The ion temperature reaches 5.53 mK via laser cooling,approaching the Doppler cooling limit.

Key words: Ion trap, laser Doppler cooling, Photo-ionization, Optical frequency standards

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