Laser Physics Letters

Parametric amplification of dressed multi-wave mixing in an atomic ensemble

H-T Chen, M Z Qin, Yi‐Qi Zhang, Xinhao Zhang, Feng Wen, Jianming Wen, Y P Zhang

Published Feb 25, 2014• 20 citations

Abstract

We theoretically investigate the influence of a dressing field on parametric amplification multi-wave mixing (PA-MWM) processes in an atomic ensemble for the first time. The quantum spatial properties of PA-MWM signals are demonstrated by studying the cone emissions. Meanwhile, we investigate the intensities, the intensity difference squeezing, and the intensity noise correlation of bright twin PA-MWM beams, which are generated by injecting the MWM signals into the input ports of a spontaneous parametric four-wave mixing process. Both the spatial properties and the quantum correlation can be enhanced or suppressed via a bright state or a dark state, which is induced by the single or double dressing effect. This study has potential applications in quantum security, quantum imaging and long distance quantum communications.

DOI: 10.1088/1612-2011/11/4/045201

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