论文标题
用于紧凑的冷原子频率标准的Vacuum微波谐振器
In-vacuum microwave resonator for a compact cold atom frequency standard
论文作者
论文摘要
特此提出了用于紧凑的冷原子时钟的物理包。该软件包的独特性是其小尺寸，它可以首次以3U高度的标准软件包（= 133mm）的标准软件包实现。通过使用空中微波（MW）环间隔谐振器（LGR），可以从典型谐振器的长度和直径降低，使这些维度成为可能。在介绍了设计之后，我们分析了MW场振幅和相位的同质性。我们发现，由于MW字段的不均匀性而引起的预期时钟不稳定为$ \ sim1.5 \ cdot10^{ - 14} $/天。添加其他时钟错误，我们估计该设计的冷原子时钟的总不确定性大约为$ \ sim2 \ cdot10^{ - 14} $/天，这会导致每天几纳米秒的时间漂移。这样的时钟可以用作初级频率参考，并可以替换剖腹束原子时钟和GPS学科的Rubidium原子钟。
A physics package for a compact cold atomic clock is hereby presented. The uniqueness of this package is its small dimensions that enable, for the first time, implementation of a primary cold atomic clock in a standard package of 3U height (=133mm). These dimensions are made possible by using an in-vacuum Microwave (MW) Loop Gap Resonator (LGR) whose length and diameter can be reduced from those of a typical resonator. Following our presentation of the design, we analyze the homogeneity of the MW field amplitude and phase. We find that the expected clock instability due to non-uniformity of the MW field is $\sim1.5\cdot10^{-14}$/day. Adding other clock errors, we estimate the total uncertainty of a cold atomic clock of this design will be around $\sim2\cdot10^{-14}$/day which results in a time drift of a few nanoseconds/day. Such a clock can serve as a primary-grade frequency reference, and may replace the cesium beam atomic clock and the GPS-disciplined rubidium atomic clocks.
