A transportable 40Ca+ single-ion clock with $7.7\times 10^{-17}$ systematic uncertainty

  title={A transportable 40Ca+ single-ion clock with \$7.7\times 10^\{-17\}\$ systematic uncertainty},
  author={Jian Cao and Ping Zhang and Jun-juan Shang and Kai-feng Cui and Jinbo Yuan and Si-jia Chao and Shao-mao Wang and Hua-lin Shu and Xue-ren Huang},
: A transportable optical clock refer to the 4s 2 S 1/2 -3d 2 D 5/2 electric quadrupole transition at 729 nm of single 40 Ca + trapped in mini Paul trap has been developed. The physical system of 40 Ca + optical clock is re-engineered from a bulky and complex setup to an integration of two subsystems: a compact single ion unit including ion trapping and detection modules, and a compact laser unit including laser sources, beam distributor and frequency reference modules. Apart from the… 

Development and metrological characterization of a high-performance Cs cell atomic clock based on coherent population trapping

This thesis work, performed in the frame of the MClocks European project (http://www.inrim.it/mclocks), reports the development and metrological characterization of a high-performance Cs vapor cell

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With the decrease in dimension of ion traps employed in optical frequency standards and precision spectroscopy, the sensitivity of trapping behavior to trap geometry is more and more prominent. We

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In many of the high-precision optical frequency standards with trapped atoms or ions that are under development to date, the ac Stark shift induced by thermal radiation leads to a major contribution