标题： 原子干涉仪与布洛赫振荡结合的局部重力测量 显示英文标题

标题： Local gravity measurement with the combination of atom interferometry and Bloch oscillations

摘要： 我们提出了一种结合布洛赫振荡和原子干涉仪的局部重力测量方法。 在下落距离为0.8毫米的情况下，我们实现了300秒积分时间下的2×10-7 g的灵敏度。未测量到与布洛赫振荡相关的偏差。 观察到与布洛赫振荡相关的对比度衰减，并归因于激光束的空间质量。 采用了一种简单的实验配置，其中单个后向反射激光束执行原子发射、受激拉曼跃迁和布洛赫振荡。 因此，可以通过一个不比标准原子重力计更复杂的装置实现布洛赫振荡和原子干涉仪的结合。 显示英文摘要

摘要： We present a local measurement of gravity combining Bloch oscillations and atom interferometry. With a falling distance of 0.8 mm, we achieve a sensitivity of 2x10-7 g with an integration time of 300 s. No bias associated with the Bloch oscillations has been measured. A contrast decay with Bloch oscillations has been observed and attributed to the spatial quality of the laser beams. A simple experimental configuration has been adopted where a single retro-reflected laser beam is performing atoms launch, stimulated Raman transitions and Bloch oscillations. The combination of Bloch oscillations and atom interferometry can thus be realized with an apparatus no more complex than a standard atomic gravimeter.