Experimental and theoretical study of dynamic polarizabilities in the - clock transition in rubidium-87 and determination of E1 matrix elements
arXiv:2212.10743 · doi:10.1103/PhysRevApplied.19.054059
Abstract
The interaction between light and an atom causes perturbations in the atom's energy levels, known as the light-shift. These light-shifts are a key source of inaccuracy in atomic clocks, and can also deteriorate their precision. We present a study of light-shifts and associated dynamic polarizabilities for a two-photon atomic clock based on the - transition in rubidium-87 over the range 770 nm to 800 nm. We determine experimental and theoretical values for a magic wavelength in this range and the electric dipole (E1) matrix element for the - transition. We find a magic wavelength of 776.179(5) nm (experimental) and 776.21 nm (theoretical) in the vicinity of the - resonance, and the corresponding reduced E1 matrix element 1.80(6) (experimental) and 1.96(15) (theoretical). These values resolve a previous discrepancy between theory and experiment.
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