用物质波磁敏仪检测外力和环境力
Detection of Applied and Ambient Forces with a Matterwave Magnetic-Gradiometer
摘要：
利用$^{87}$ Rb原子玻色-爱因斯坦凝聚体的原子干涉仪测量了磁场梯度。复合光脉冲被用来构建一个空间对称的马赫-曾德尔几何。使用偏置干涉仪，我们证明了在我们的系统中的原子的位置测量小的残余力的能力。它们是15 $\pm$ 2 mG/cm的剩余磁场梯度和0.08 $\pm$ 0.02 m/s $^2$的惯性加速度。该方法在精密测量设备的标定和减小系统误差方面具有重要的应用价值。
英文摘要：
An atom interferometer using a Bose-Einstein condensate of $^{87}$Rb atoms is utilized for the measurement of magnetic field gradients. Composite optical pulses are used to construct a spatially symmetric Mach-Zehnder geometry. Using a biased interferometer we demonstrate the ability to measure small residual forces in our system at the position of the atoms. These are a residual magnetic field gradient of 15$\pm$2 mG/cm and and an inertial acceleration of 0.08$\pm$0.02 m/s$^2$. Our method has important applications in the calibration of precision measurement devices and the reduction of systematic errors.
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