We show that the light shift in atomic clocks can be suppressed using time variation of the interrogation field intensity. By measuring the clock output at two intensity levels, error signals can be generated that simultaneously stabilize a local oscillator to an atomic transition and correct for the shift of this transition caused by the interrogating optical field. These methods are suitable for optical clocks using one- and two-photon transitions, as well as for microwave clocks based on coherent population trapping or direct interrogation. The proposed methods can be widely used both for high-precision scientific instruments and for a wide range of commercial clocks, including chip-scale atomic clocks.

中文翻译：

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使用功率调制抑制原子钟中光移的一般方法

我们表明，利用询问场强度的时间变化可以抑制原子钟中的光偏移。通过在两个强度级别上测量时钟输出，可以生成误差信号，该误差信号同时将本地振荡器稳定到原子跃迁，并校正由询问光场引起的跃迁的偏移。这些方法适用于使用单光子跃迁和双光子跃迁的光学时钟，以及基于相干粒子捕获或直接询问的微波时钟。所提出的方法可广泛用于高精度科学仪器和包括芯片规模原子钟在内的各种商业时钟。