Anomalous dynamics of a single ion in an optical lattice

被引：141

作者：

Katori, H ^{[1
]}

Schlipf, S ^{[1
]}

Walther, H ^{[1
]}

机构：

[1] MAX PLANCK INST QUANTUM OPT,D-85748 GARCHING,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2221

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the dynamics of a single ion in a one-dimensional optical lattice by tracing its position through fluorescent photons. A Mg-24(+) ion was radially confined in a two-dimensional radio-frequency trap, while an optical lattice superimposed on a weak electric potential was applied along the free axis. By decreasing the optical potential depth, a change of the transport characteristics from diffusive to quasiballistic was observed. Corresponding to this change, the distribution of the ion position showed an excess fluctuation reminiscent of Levy walks. A statistical analysis of these fluctuations confirmed a significant deviation from the Gaussian diffusion law.

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页码：2221 / 2224

页数：4

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