Identifying the orbital angular momentum of light based on atomic ensembles

被引：17

作者：

Han, Liang ^{[1
]}

Cao, Mingtao ^{[1
]}

Liu, Ruifeng ^{[1
]}

Liu, Hao ^{[1
]}

Guo, Wenge ^{[2
]}

Wei, Dong ^{[1
]}

Gao, Shaoyan ^{[1
]}

Zhang, Pei ^{[1
]}

Gao, Hong ^{[1
]}

Li, Fuli ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Peoples R China

[2] Xian Shiyou Univ, Sch Sci, Xian 710065, Peoples R China

来源：

EPL | 2012年 / 99卷 / 03期

基金：

中国国家自然科学基金;

关键词：

VAPOR;

D O I：

10.1209/0295-5075/99/34003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a scheme to distinguish the orbital-angular-momentum state of the Laguerre-Gaussian (LG) beam based on the electromagnetically induced transparency modulated by a microwave field in atomic ensembles. We show that the transverse-phase variation of a probe beam with the LG mode can be mapped into the spatial intensity distribution due to the change of atomic coherence caused by the microwave. The proposal may provide a useful tool for studying higher-dimensional quantum information based on atomic ensembles. Copyright (C) EPLA, 2012

引用

页数：5

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