Two-Photon Polarizability of Ba⁺ Ion: Control of Spin-Mixing Processes in an Ultracold ¹³⁷Ba⁺ − ⁸⁷Rb Mixture

Abstract

In this work, we present a scheme of a two-photon interaction to calculate magic wavelengths for the 62S12 − 52D32,52 clock transitions of Ba+ ion employing the relativistic coupled-cluster method. These magic wavelengths can be essential inputs to achieve better accuracy in the future ionic clock experiments. In this paper, we further show an application of a two-photon interaction to the spin-mixing processes, |0,0⟩↔|+1,−1⟩ and |0,0⟩↔|−1,+1⟩, of an ultra-cold spin-1 mixture of 137Ba+ ions and 87Rb atoms. We determine the protocols for selecting these spin-mixing oscillations by changing the strength and frequencies of the externally applied magnetic field and laser beams, respectively.

Keywords

• two-photon interaction
• electric dipole polarizability
• magic wavelength
• binary mixture
• spin-mixing