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arXiv · 1207.2299

Identifying the orbital angular momentum of light based on atomic ensembles

Liang Han·Mingtao Cao·Ruifeng Liu·Hao Liu·Wenge Guo·Dong Wei·Shaoyan Gao·Pei Zhang·Hong Gao
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Abstract

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.

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Liang Han, Mingtao Cao, Ruifeng Liu, Hao Liu, Wenge Guo, Dong Wei, Shaoyan Gao, Pei Zhang, Hong Gao. 2012-07-10. Identifying the orbital angular momentum of light based on atomic ensembles. https://doi.org/10.1209/0295-5075%2F99%2F34003

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