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Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion |
| SHU Hua-Lin 1,2,3;GUO Bin 1,2,3;GUAN Hua 1,2,3;LIU Qu 1,2,3;HUANG Xue-Ren 1,2;GAO Ke-Lin 1,2 |
| 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 4300713Graduate School of the Chinese Academy of Science, Beijing 100049 |
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| Cite this article: |
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SHU Hua-Lin, GUO Bin, GUAN Hua et al 2007 Chin. Phys. Lett. 24 1217-1219 |
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Abstract A single 40Ca+ ion is loaded in a miniature Paul trap and the probability of directly loading a single ion is above 50%. The signal-to-noise ratio and the storage time for a single ion have been improved by minimizing the ion micromotion and locking a 397nm cooling laser to a Fabry--Perot interferometer and optogalvanic signal. From the fluorescence spectrum, the ion temperature is estimated to be about 5mK.
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| Keywords:
32.80.Pj
32.70.Jz
42.62.Fi
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Received: 12 February 2007
Published: 23 April 2007
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