We present a scheme for a compact rubidium cold-atom clock which performs diffuse light cooling, microwave interrogation, and detection of the clock signal in a cylindrical microwave cavity. The diffuse light is produced by laser light reflection at the inner surface of the microwave cavity. The pattern of the injected laser beams is specially designed to accumulate the majority of the cold atoms in the center of the microwave cavity. Microwave interrogation of the cold atoms in the cavity leads to Ramsey fringes, which have a linewidth of 24.5 Hz with a contrast of 95.6% when the free evolution time is 20 ms. Recently, a frequency stability of 7.3 x 10(-13) tau(-1/2) has been achieved. The scheme of this physical package can largely reduce the cold-atom clock complexity and increase clock performance.
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机译：我们提出了一种紧凑的id冷原子钟方案，该方案可以进行漫射光冷却，微波询问以及在圆柱形微波腔中检测时钟信号。散射光是通过在微波腔的内表面处的激光反射产生的。注入的激光束的图案经过专门设计，可将大部分冷原子聚集在微波腔体的中心。微波对空腔中冷原子的询问会产生拉姆齐条纹，其自由宽度为20 ms时，线宽为24.5 Hz，对比度为95.6％。最近，已经实现了7.3 x 10（-13）tau（-1/2）的频率稳定性。这种物理封装的方案可以大大降低冷原子时钟的复杂度并提高时钟性能。
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