In this paper, we demonstrate that the intensity difference squeezing (IDS) of parametric amplified four-wave mixing (PA-FWM) can be modulated by the phase-sensitive dressed effect in a hot rubidium (Rb) atomic system. The introduction of phase-sensitive dressed effect can enhance the degree of IDS of PA-FWM to −8.1 dB, as compared to that in the phase-insensitive dressed PA-FWM of −6.6 dB. The phase-sensitive dressing field can not only enhance the degree of IDS of PA-FWM by the dressed effect, but can also be treated as the seed beam of the PA-six wave mixing process. So, double-injected three-mode IDS obviously has a bigger degree of IDS compared with the single-injection case. One advantage of the current scheme for enhancing the generated IDS is that the experimental setup is simple and mechanically stable. These outcomes can be used in the fabrication of quantum devices and the realization of quantum metrology.

中文翻译：

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在热原子系统中通过相敏修整效应增强对四波混频的压缩

在本文中，我们证明了在热rub（Rb）原子系统中，可以通过相敏修整效应来调节参量放大四波混合（PA-FWM）的强度差压缩（IDS）。相较于对相敏感的修整型PA-FWM为-6.6 dB，相敏修整效应的引入可将PA-FWM的IDS程度提高至-8.1 dB。相敏修整场不仅可以通过修整效应提高PA-FWM的IDS程度，还可以作为PA-六波混频过程的种子束。因此，与单次注入的情况相比，双次注入的三模式IDS显然具有更高的IDS程度。当前用于增强生成的IDS的方案的优点之一是实验设置简单且机械稳定。