标题： 通过调制原子速度的自校准原子干涉仪陀螺仪 显示英文标题

标题： Self-Calibrated Atom-Interferometer Gyroscope by Modulating Atomic Velocities

摘要： 原子干涉仪陀螺仪因其潜在的长期稳定性和极低漂移而受到广泛关注。对于这种高精度仪器，实现绝对旋转测量的自校准是非常需要的。在这里，我们提出了并展示了原子陀螺仪的自校准。该校准是通过使用激光频率的失谐来控制原子速度，从而调节陀螺仪的标度因数来实现的。该调制决定了干涉条纹的阶数和初始相位，从而消除了由干涉信号周期性引起的模糊性。该校准方法通过测量地球的自转得到了验证。长期稳定且自校准的原子干涉仪陀螺仪在基础物理和长时间导航领域有重要的应用。 显示英文摘要

摘要： Atom-interferometer gyroscopes have attracted much attention for their potential superior long-term stability and extremely low drift. For such high precision instrument, a self-calibration to achieve an absolute rotation measurement is highly demanded. Here we propose and demonstrate a self-calibration of the atomic gyroscope. The calibration is realized by using the detuning of laser frequency to control the atomic velocity thus to modulate the scale factor of the gyroscope. The modulation determines the order and the initial phase of the interference stripe, thus eliminates the ambiguity caused by the periodicity of the interferometric signal. The calibration method is verified by measuring the Earth's rotation. Long-term stable and self-calibrated atom-interferometer gyros can find important applications in the fields of fundamental physics and long-time navigation.