Observation of superradiant and subradiant spontaneous emission of two trapped ions

被引:410
作者
DeVoe, RG
Brewer, RG
机构
关键词
D O I
10.1103/PhysRevLett.76.2049
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the first observation of a microscopically resolved interaction between two trapped atoms. This is also the first observation of two-ion superradiance and subradiance, the most elementary example of Dicke's theory. Its signature is the variation of the spontaneous emission decay rate of a laser-cooled two-ion crystal, +1.5% and -1.2%, as the ion-ion distance is changed from 1380 to 1540 nm, in agreement with a no-free-parameter theory. The experiment uses an ion microtrap (80 mu m radius) with planar electrodes and a new few-atom technique for measuring lifetimes.
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页码:2049 / 2052
页数:4
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