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Annexing magic and tune-out wavelengths to the clock transitions of the alkaline-earth metal ions

Published 27 Mar 2017 in physics.atom-ph | (1703.08969v1)

Abstract: We present additional magic wavelengths ($\lambda_{\rm{magic}}$) for the clock transitions in the alkaline-earth metal ions considering circular polarized light aside from our previously reported values in [J. Kaur et al., Phys. Rev. A {\bf 92}, 031402(R) (2015)] for the linearly polarized light. Contributions from the vector component to the dynamic dipole polarizabilities ($\alpha_d(\omega)$) of the atomic states associated with the clock transitions play major roles in the evaluation of these $\lambda_{\rm{magic}}$, hence facilitating in choosing circular polarization of lasers in the experiments. Moreover, the actual clock transitions in these ions are carried out among the hyperfine levels. The $\lambda_{\rm{magic}}$ values in these hyperfine transitions are estimated and found to be different from $\lambda_{\rm{magic}}$ for the atomic transitions due to different contributions coming from the vector and tensor part of $\alpha_d(\omega)$. Importantly, we also present $\lambda_{\rm{magic}}$ values that depend only on the scalar component of $\alpha_d(\omega)$ for their uses in a specially designed trap geometry for these ions so that they can be used unambiguously among any hyperfine levels of the atomic states of the clock transitions. We also present $\alpha_d(\omega)$ values explicitly at the 1064 nm for the atomic states associated with the clock transitions which may be useful for creating "high-field seeking" traps for the above ions using the Nd:YAG laser. The tune out wavelengths at which the states would be free from the Stark shifts are also presented. Accurate values of the electric dipole matrix elements required for these studies are given and trends of electron correlation effects in determining them are also highlighted.

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