Generation of light carrying orbital angular momentum via induced coherence grating in cold atoms

被引：84

作者：

Barreiro, S ^{[1
]}

Tabosa, JWR ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.90.133001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the generation of light carrying orbital angular momentum through Bragg diffraction into an electromagnetically induced coherence grating in a degenerate two-level system of cold cesium atoms. The induced Zeeman coherence grating is shown to contain the spatial phase structure of the incident beams. The exchange of phase information between a light beam with orbital angular momentum and a long-lived atomic coherence opens up the way to process quantum information encoded in a multidimensional state space.

引用

页数：4

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