A definition of the SI second based on several optical transitions
J\'er\^ome Lodewyck (SYRTE, LNE - SYRTE)
TL;DR
This paper reviews the potential redefinition of the SI second based on multiple optical transitions, analyzing its practical implications, strengths, and weaknesses to inform future standards.
Contribution
It provides a detailed analysis of the advantages and challenges of adopting a multi-transition optical frequency standard for redefining the SI second.
Findings
Multiple optical transitions offer high precision potential.
The redefinition presents practical implementation challenges.
A comprehensive assessment of strengths and weaknesses is provided.
Abstract
A new definition of the SI second based on optical transitions is expected to be adopted within the next 10 years. Several options for this redefinition are currently under consideration. Among them, a definition based on several transitions would take advantage of the variety of high performance optical frequency standards. In this paper, we review practical aspects such a definition entails, and propose a detailed analysis of its strengths and weaknesses.
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Taxonomy
TopicsAdvanced Frequency and Time Standards · Scientific Measurement and Uncertainty Evaluation · Advanced Fiber Laser Technologies