标题： 千赫兹频段的明亮压缩光 显示英文标题

标题： Bright squeezed light in the kilohertz frequency band

摘要： 自由运行激光的大量技术噪声是制备强压缩光的根本限制，尤其是在MHz频段内。 我们构建了一个通用且完整的非经典稳定理论模型，并提出了一种借助混合噪声稳定技术的新颖强压缩光生成方案。 该方案吸收了宽带被动噪声稳定技术，成功将非经典主动稳定反馈频率带宽扩展到MHz频段。 同时，技术噪声抑制程度进一步提高了9 dB，为制备宽带强压缩光创造了前提条件。 最后，生成了一种功率为1 mW、压缩带宽在kHz到MHz频段内的-5.5 dB强压缩光。 实验结果与理论结果高度一致。 据我们所知，这是首次在kHz频率范围内实现毫瓦级强压缩光的演示。 这一演示为强压缩光在量子计量学中的潜在应用提供了启示，并可能在未来催生新的概念。 显示英文摘要

摘要： The largely technical noise of a free running laser is the fundamental limit for preparation of a bright squeezed light, especially within MHz band. We construct a universal and complete theoretical model for nonclassical stabilization, and propose a novel bright squeezed light generation scheme with assistance of a hybrid noise stabilization technology. The scheme assimilates a broadband passive noise stabilization to successfully extend the feedback frequency bandwidth of a nonclassical active stabilization to MHz band. Meanwhile, the technical noise suppression magnitude is further improved by 9 dB, which creates the prerequisite conditions for preparing a broadband bright squeezed light. Finally, a -5.5 dB bright squeezed light with a power of 1 mW and a squeezing bandwidth among kHz to MHz band was generated. The experimental results agree well with the theoretical one. To the best of our knowledge, it is the first demonstration of a milliwatt-order bright squeezed light across the kHz frequency band. The demonstration sheds light on potential applications of bright squeezed light in quantum metrology and might enable new concepts in the future.