论文标题
通过可调节动量转移来调整多环原子干涉仪
Tailoring multi-loop atom interferometers with adjustable momentum transfer
论文作者
论文摘要
多环物质波干涉仪对于测量时间或空间中物理量的衍生物的量子传感至关重要。由于多环干涉仪需要多种反射仪，因此物质波镜的缺陷会产生杂乱无章的路径，使感兴趣的信号扰乱。在这里，我们演示了一种可调动量转移的方法，该方法可防止双环原子干涉仪中伪造路径的重组，该干涉仪旨在测量旋转速率。我们通过实验研究了伪物质波的重组条件，该条件是由占原子源相干性能的模型来定量支持的。最终，我们证明了该方法在建造冷原子陀螺仪的有效性，其单发加速度的灵敏度至少抑制了至少50倍。我们的研究将影响多环原子干涉仪的设计，以测量单个惯性量。
Multi-loop matter-wave interferometers are essential in quantum sensing to measure the derivatives of physical quantities in time or space. Because multi-loop interferometers require multiple reflections, imperfections of the matter-wave mirrors create spurious paths that scramble the signal of interest. Here we demonstrate a method of adjustable momentum transfer that prevents the recombination of the spurious paths in a double-loop atom interferometer aimed at measuring rotation rates. We experimentally study the recombination condition of the spurious matter waves, which is quantitatively supported by a model accounting for the coherence properties of the atomic source. We finally demonstrate the effectiveness of the method in building a cold-atom gyroscope with a single-shot acceleration sensitivity suppressed by a factor of at least 50. Our study will impact the design of multi-loop atom interferometers that measure a single inertial quantity.
