| ATOMIC AND MOLECULAR PHYSICS |
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Cooling and Crystallization of Trapped 113Cd+ Ions for Atomic Clock |
| WANG Shi-Guang1,2, ZHANG Jian-Wei1,3**, MIAO Kai1,3, WANG Zheng-Bo1,3, WANG Li-Jun1,2,3** |
1Joint Institute for Measurement Science, Tsinghua University, Beijing 100084
2Department of Physics, Tsinghua University, Beijing 100084
3Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
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| Cite this article: |
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WANG Shi-Guang, ZHANG Jian-Wei, MIAO Kai et al 2013 Chin. Phys. Lett. 30 013703 |
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Abstract We report recent experimental progress toward a trapped 113Cd+ ion microwave frequency standard. With laser cooling, a large number of trapped cadmium ions are cooled to crystallization and the temperature of the ion crystal is measured to be 16 ± 3 mK. The second order Doppler frequency shift, a main limiting factor of the atomic clock's performance, is estimated to be less than 1 × 10?16.
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Received: 11 October 2012
Published: 04 March 2013
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