Dynamic Polarizability of the 85Rb 5D3/2-State in 1064 nm Light

We report a measurement of the dynamic (ac) scalar polarizability of the 5D(3/2) state in Rb-85 atoms at a laser wavelength of 1064 nm. Contrary to a recent measurement in Phys. Rev. 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(5D3/2)=-499 +/- 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.

Automated summary

We report a measurement of the dynamic scalar polarizability of the 5D(3/2) state in Rb-85 atoms at a laser wavelength of 1064 nm. The experimental results are consistent with a previous measurement, and the light intensity of 1064 nm is calibrated by analyzing the light shifts of the D1 line.