A time orbiting potential trap confines neutral atoms in a rotating magnetic field. The rotation of the field can be useful for precision measurements, since it can average out some systematic effects. However, the field is more difficult to characterize than a static field, and it makes light applied to the atoms have a time-varying optical polarization relative to the quantization axis. These problems can be overcome using stroboscopic techniques, where either a radio-frequency field or a laser is applied in pulses that are synchronized to the rotating field. Using these methods, the magnetic field can be characterized with a precision of 10 mG and light can be applied with a polarization error of $5\times {10}^{-5}$.

中文翻译：

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精确控制时间轨道势阱中的磁场和光偏振

时间轨道势阱将中性原子限制在旋转磁场中。磁场的旋转可用于精确测量，因为它可以使一些系统影响平均化。但是，该场比静态场更难以表征，并且使施加到原子的光相对于量化轴具有随时间变化的光学偏振。使用频闪技术可以克服这些问题，在这种技术中，将射频场或激光施加到与旋转场同步的脉冲中。使用这些方法，可以以10 mG的精度表征磁场，并且可以施加极化误差为10的光。$5\times {10}^{-5}$。