论文标题
使用bragg衍射的$μ$ rad准确性的大摩肌转移原子干涉仪
Large-momentum-transfer atom interferometers with $μ$rad-accuracy using Bragg diffraction
论文作者
论文摘要
迄今为止最精确的量子传感器之一，使用弹性bragg散射使用弹性bragg散射的大型摩肌转移〜（LMT）原子干涉仪。为了将其准确性从MRAD提高到$μ$ RAD制度，有必要了解Bragg干涉仪的丰富现象学，这与标准的两模式干涉仪的不同之处在于。我们为干涉仪信号开发了一个分析模型，并使用全面的数值模拟证明了其准确性。我们的分析处理允许确定LMT Bragg干涉仪的原子投影噪声极限，并提供了使该极限饱和的手段。它可以使用适当的光脉冲参数提供两个数量级，从两个数量级降至几个$μ\ mathrm {rad} $的准确知识，并抑制了两个数量级。
Large-momentum-transfer~(LMT) atom interferometers using elastic Bragg scattering on light waves are among the most precise quantum sensors to date. To advance their accuracy from the mrad to the $μ$rad regime, it is necessary to understand the rich phenomenology of the Bragg interferometer, which differs significantly from that of a standard two-mode interferometer. We develop an analytic model for the interferometer signal and demonstrate its accuracy using comprehensive numerical simulations. Our analytic treatment allows the determination of the atomic projection noise limit of an LMT Bragg interferometer, and provides the means to saturate this limit. It affords accurate knowledge of the systematic phase errors as well as their suppression by two orders of magnitude down to a few $μ\mathrm{rad}$ using appropriate light pulse parameters.
