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一个光学格子时钟,在10~18级准确性和稳定性

B J Bloom¹, T L Nicholson¹, J R Williams²

¹1] JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA [2] Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA [3].

|January 28, 2014

概括

研究人员开发了一种新的多原子光学格子时钟,具有前所未有的精度 (6.4 × 10−18). 这一进步显著减少了测量时间,并超过了基本科学应用的单离子时钟性能.

科学领域:

原子,光学和量子科学的科学.
精确度测量测量的精确度
量子信息科学是一种量子信息科学.

背景情况:

原子钟研究推动了基础科学和应用科学.
使用单个离子的光学时钟具有较低的系统不确定性.
多原子格子时钟在精度方面很出色,但在准确性方面落后.

研究的目的:

为了提高多原子光学格子时钟的准确性.
为了达到超越单离子钟的精度.
为了减少原子钟的测量时间.

主要方法:

为光学格子时钟开发多原子系统.
对所有已知的不确定性源进行系统评估.
在现场监测黑体辐射环境.

主要成果:

证明了一个多原子系统,精度为6.4 × 10−18.
实现了比单离子时钟更高的精度.
将测量时间缩短了两个数量级.
提高了22倍的光学格子时钟精度.

结论:

开发的光学格子时钟为主要标准提供了最知名的稳定性和准确性.
这一进步有利于SI单位的实现,基本常数变化搜索和地质测量.
这项工作有助于量子传感器和多体量子状态工程,以提高精度.

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