微重力条件下的光脉冲原子干涉测量
Light-pulse atom interferometry in microgravity
摘要：
本文描述了在约化引力下利用冷~（87）Rb原子的光脉冲干涉仪的工作。利用光脉冲引起的一系列两次喇曼跃迁，我们获得了在低重力环境中抛物飞行时的Ramsey条纹。由于我们的机构紧凑，我们在一个实地无法进入的制度下运作。在低得多的重力环境和卫星的低振动水平下，我们的冷原子干涉仪可以测量加速度，其灵敏度比最好的地面加速度计好几个数量级，并接近已验证的空间加速度计。
英文摘要：
We describe the operation of a light pulse interferometer using cold 87Rb atoms in reduced gravity. Using a series of two Raman transitions induced by light pulses, we have obtained Ramsey fringes in the low gravity environment achieved during parabolic flights. With our compact apparatus, we have operated in a regime which is not accessible on ground. In the much lower gravity environment and lower vibration level of a satellite, our cold atom interferometer could measure accelerations with a sensitivity orders of magnitude better than the best ground based accelerometers and close to proven spaced-based ones.
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