Dynamic polarizability of the ${}^{85}$Rb $5D_{3/2}$-state in 1064 nm light

Abstract

We report a measurement of the dynamic (ac) scalar polarizability of the $5D_{3/2}$ state in ${}^{85}$Rb atoms at a laser wavelength of 1064~nm. Contrary to a recent measurement in Phys. Rev. \textbf{A} 104, 063304 (2021), the experiments are performed in a low-intensity regime in which the ac shift is less than the $5D_{3/2}$ state's hyperfine structure, as utilized in numerous experiments with cold, trapped atoms. The extracted ac polarizability is ${\alpha }_{5D_{3/2}}=-499\pm 59$~a.u., within the uncertainty of the aforementioned previous result. The calibration of the 1064~nm light intensity, performed by analyzing light shifts of the D1 line, is the main source of uncertainty. Our results are useful for applications of the Rb $5D_{3/2}$ state in metrology, quantum sensing, and fundamental-physics research on Rydberg atoms and molecules.

8 pages, 5 figures

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• Broadband Rydberg Atom-Based Electric-Field Probe: From Self-Calibrated Measurements to Sub-Wavelength Imaging
• Lifetime measurements of the 5d states of rubidium
• Circularizing Rydberg atoms with time-dependent optical traps
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Cited by in corpus (1)

• Electric field analysis in a cold-ion source using Stark spectroscopy of Rydberg atoms