LASER COOLING OF A SINGLE CA+ ION - OBSERVATION OF QUANTUM JUMPS

被引：29

作者：

URABE, S ^{[1
]}

HAYASAKA, K ^{[1
]}

WATANABE, M ^{[1
]}

IMAJO, H ^{[1
]}

OHMUKAI, R ^{[1
]}

HAYASHI, R ^{[1
]}

机构：

[1] KAGOSHIMA UNIV,FAC ENGN,KAGOSHIMA 890,JAPAN

来源：

APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY | 1993年 / 57卷 / 05期

关键词：

D O I：

10.1007/BF00332462

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper describes trapping and laser cooling of a Ca+ ion in an rf quadrupole ion trap. A single Ca+ ion is laser cooled to below 130 mK and quantum jumps are observed by exciting the ion into the metastable D5/2 state via the P3/2 state. The lifetime of the metastable D5/2 state is estimated from the distribution of the dark periods of the quantum-jump signal. Collision-induced jumps between the metastable D3/2 state and the D5/2 state in a background gas are also directly observed.

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页码：367 / 371

页数：5

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