操作一个多离子时钟与动态解
1Weizmann Institute of Science, Department of Physics of Complex Systems and AMOS, Rehovot 7610001, Israel.
Physical review letters
|February 6, 2025
概括
我们开发了一种几乎连续的动态解方案,以减少多离子光学时钟中的频率转移. 这种方法显著提高了-88离子钟的时钟稳定性和准确性.
科学领域:
- 原子,分子和光学物理学
- 量子计量学 量子计量学
- 精确度测量 精确度测量 精确度测量
背景情况:
- 多离子光学时钟面临不均的频率转移的挑战,这限制了它们的稳定性和准确性.
- 主要的变化包括电四极和线性泽曼效应,对于高精度测量来说,这些变化对缓解至关重要.
研究的目的:
- 研究和描述一个近连续动态解 (QCDD) 方案,以抑制多离子光学时钟中的频率转移.
- 为了证明QCDD方案在减轻电四极和线性Zeeman转移方面的有效性.
- 评估QCDD方案中与射频驱动器相关的系统转换.
主要方法:
- 实施一个几乎连续的动态解方案,使用最多7 ^{88}Sr^{+} 离子的链.
- 频率转移的特征,特别是电四极和线性齐曼转移.
- 评估来自无线电频率驱动器的系统频率不确定性贡献.
主要成果:
- 已经证明了对频率转移的抑制超过3个数量级.
- 在 ^{88}Sr^{+} 离子链中,在 7×10^{-17} 以下实现相对频率不均性.
- 量化了从射频驱动器的系统性转移低于10^{-17} 的相对不确定性.
结论:
- 几乎连续的动态解方案有效地抑制了多离子光学时钟中占主导地位的频率转移.
- 这种方法为多离子时钟提供了一条道路,其稳定性和准确性提高,与单离子时钟相提并论.
- 可以进一步改进射频驱动器,从而可能进一步提高时钟性能.
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