Magic wavelengths for terahertz clock transitions

Abstract

Magic wavelengths for laser trapping of boson isotopes of alkaline-earth metal atoms Sr, Ca, and Mg are investigated while considering terahertz clock transitions between the ${}^{3}{P}_{0}$, ${}^{3}{P}_{1}$, and ${}^{3}{P}_{2}$ metastable triplet states. Our calculation shows that magic wavelengths for laser trapping do exist. This result is important because those metastable states have already been used to make accurate clocks in the terahertz frequency domain. Detailed discussions for magic wavelengths for terahertz clock transitions are given in this article.