Strontium optical lattice clock

被引：8

作者：

Lin Yi-Ge ^{[1
,2
]}

Fang Zhan-Jun ^{[1
,2
]}

机构：

[1] Natl Inst Metrol, Beijing 100029, Peoples R China

[2] Natl Time & Frequency Metrol Ctr, Beijing 100029, Peoples R China

来源：

ACTA PHYSICA SINICA | 2018年 / 67卷 / 16期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

atomic clock; optical clock; optical lattice; strontium; FREQUENCY-MODULATION SPECTROSCOPY; QUANTUM PROJECTION NOISE; LASER STABILIZATION; THERMAL-NOISE; AMPLITUDE-MODULATION; ACCURACY EVALUATION; FOUNTAIN CLOCK; STABILITY; STANDARDS; PHASE;

D O I：

10.7498/aps.67.20181097

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The strontium optical lattice clock has experienced a rapid development since the beginning of the 21st century. Its relative frequency uncertainty, on the order of 10(-)(18), has surpassed that of the cesium fountain clock, the current primary standard for time and frequency. This supreme level of precision reflects one of the most advanced measurement capabilities of mankind. This article reviews the current progress of the strontium optical lattice clock, and describes its key components and techniques, including high-resolution spectroscopy, close-loop operation, evaluation of systematic shifts, and absolute frequency measurement. The applications and future outlook of the strontium clock are also summarized.

引用

页数：21

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