Multipartite quantum correlation plays a vital role in potential applications of quantum technologies. In this paper, using energy‐level cascaded four‐wave mixing (EC‐FWM) process, a scheme to produce quantum correlated three‐mode light beams within a single device of hot atomic medium of rubidium is proposed. Two‐ and three‐mode amplitude, phase quadrature squeezing and intensity difference squeezing using energy‐level simultaneous cascaded FWM (ESC‐FWM) method and energy‐level ordinal cascaded FWM (EOC‐FWM) method, respectively, is theoretically reported. Via investigating their covariance matrix properties, the comparison has been made between the two methods, which shows the ESC‐FWM method has a more stable mode structure than EOC‐FWM method. Moreover, versatile gain dependent squeezing via EC‐FWM is studied and analytical expressions are given. These results show a simplified and efficient experimental scheme producing multipartite quantum correlation among multiple spatially separated beams.

中文翻译：

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and蒸气同时或有序级联四波混合过程的三模压缩

多部分量子相关性在量子技术的潜在应用中起着至关重要的作用。本文采用能级级联的四波混频（EC-FWM）工艺，提出了在a的热原子介质的单个装置内产生与量子相关的三模光束的方案。从理论上分别报告了分别使用能级同时级联的FWM（ESC-FWM）方法和能级级序级联的FWM（EOC-FWM）方法进行二模和三模幅度，相位正交压缩和强度差压缩。通过研究它们的协方差矩阵属性，比较了这两种方法，这表明ESC-FWM方法比EOC-FWM方法具有更稳定的模式结构。而且，研究了通过EC-FWM实现的通用增益依赖型压缩，并给出了解析表达式。这些结果表明，在多个空间分离的光束之间产生多部分量子相关性的简化高效实验方案。