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arXiv · 1710.06706

Generating quantum correlated twin beams by four-wave mixing in hot cesium vapor

Rong Ma·Wei Liu·Zhongzhong Qin·Xiaojun Jia·Jiangrui Gao
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Abstract

Using a nondegenerate four-wave mixing process based on a double-$\Lambda$ scheme in hot cesium vapor, we generate quantum correlated twin beams with a maximum intensity-difference squeezing of 6.5 dB. The substantially improved squeezing can be mainly attributed to very good frequency and phase-difference stability between the pump and probe beams in our experiment. Intensity-difference squeezing can be observed within a wide experimental parameter range, which guarantees its robust generation. Since this scheme produces multi-spatial-mode twin beams at the Cs $D_{1}$ line, it is of interest for experiments involving quantum imaging and coherent interfaces between atomic and solid-state systems.

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Rong Ma, Wei Liu, Zhongzhong Qin, Xiaojun Jia, Jiangrui Gao. 2017-10-18. Generating quantum correlated twin beams by four-wave mixing in hot cesium vapor. https://doi.org/10.1103/physreva.96.043843

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