One of the prime applications of squeezed light is enhancing the sensitivity of an interferometer below the quantum shot-noise limit, but so far, no such experimental demonstration was reported when using the optical Kerr effect. In prior setups involving Kerr-squeezed light, the role of the interferometer was merely to characterize the noise pattern. The lack of such a demonstration was largely due to the cumbersome tilting of the squeezed ellipse in phase space. Here, we present the first experimental observation of phase-sensitivity enhancement in an interferometer using Kerr squeezing.

中文翻译：

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使用克尔挤压的量子增强干涉仪

压缩光的主要应用之一是将干涉仪的灵敏度提高到低于量子散粒噪声极限，但到目前为止，还没有关于使用光学克尔效应的实验证明的报道。在涉及克尔压缩光的先前设置中，干涉仪的作用仅仅是表征噪声模式。缺乏这样的演示主要是由于相空间中挤压椭圆的倾斜很麻烦。在这里，我们提出了使用克尔压缩的干涉仪中相位灵敏度增强的第一个实验观察结果。