DSAC and next generation high stability, long life trapped mercury ion frequency standards

The methods of trapping and cooling of atoms and ions have been transformative for atomic clocks due to the reduction, and in some cases elimination, of major systematic frequency shifts. Continuously operating atomic clocks based on trapped mercury ions have existed for decades but until recently have been restricted to terrestrial applications. The recently completed Deep Space Atomic Clock (DSAC) mission demonstrated the first trapped ion clock operation in space. Here we review DSAC as well as follow-on improvements towards the realization of high stability, long life Hg ion atomic clocks for foreseen ground and flight application.原子与离子的囚禁与冷却技术，通过对主要系统性频移的削减（部分场景下甚至可完全消除此类频移），为原子钟（atomic clock）领域带来了革命性变革。基于囚禁汞离子的连续运行式原子钟已面世数十年，但直至近期仍仅局限于地面应用场景。近期完成的深空原子钟（Deep Space Atomic Clock，简称DSAC）任务，首次实现了囚禁离子钟的在轨运行。本文综述了DSAC的相关情况，以及为实现适用于预期地面与航天应用的高稳定性、长寿命汞离子原子钟所开展的后续改进工作。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于深空原子钟（DSAC）任务及下一代高稳定性、长寿命捕获汞离子频率标准。它回顾了捕获和冷却离子技术如何减少原子钟的系统误差，并总结了DSAC作为首个太空捕获离子钟的演示成果。数据集旨在探讨未来地面和太空应用中汞离子原子钟的改进方向。