Precise many-body calculations and hyperfine interaction effect on dynamic polarizabilities at the low-lying energy levels of Y$^{2+}$

TL;DR

This paper calculates precise magic and tune-out wavelengths for Y$^{2+}$ ion transitions, considering hyperfine effects, to aid in ion cooling and trapping techniques with polarized light.

Contribution

It introduces highly accurate calculations of magic wavelengths including hyperfine interactions for Y$^{2+}$, enhancing precision in ion trapping applications.

Findings

Identified magic wavelengths for Y$^{2+}$ transitions with hyperfine effects.

Demonstrated the significance of hyperfine interactions on polarizability values.

Provided data useful for state-insensitive trapping and cooling schemes.

Abstract

The present work determines the precise values of magic wavelengths corresponding to the clock transitions 5$^2S$-4$^2D$ of Y$^{2+}$ ion both at the levels of fine- and hyperfine-structures due to the external light beams having linear as well as circular polarization. To calculate the dynamic polarizabilities of the associated states of the transitions, we employ the sum-over-states technique, where the dominating and correlation sensitive part of the sum is evaluated using a highly correlated relativistic coupled-cluster theory. The estimated magic wavelengths of the light beams have substantial importance to cool and trap the ion using a blue-detuned trapping scheme. We also present the tune-out wavelengths which are useful in state-insensitive trapping and cooling. The vector component of a total polarizability, which is induced by a circularly polarized light only, can provide additional magic wavelengths. Considerable effects of hyperfine interaction on the values of polarizabilities and number of magic wavelengths divulge the importance of precise estimations of hyperfine structure splitting.