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We demonstrate reduction of the dc polarizability of Cesium atom Rydbergstates in a 77 K environment utilizing microwave field dressing. In particularwe reduce the polarizability of $52P_{3/2}$ states which have resonances at5.35 GHz to $51D_{5/2}$, suitable for interfacing Rydberg atoms tosuperconducting resonators in a cryogenic environment. We measure thepolarizability of the Rydberg states using Magneto-Optical-Trap (MOT) lossspectroscopy. Using an off-resonant radio-frequency (RF) dressing fieldcoupling $52P_{3/2}$ and $51D_{5/2}$ we demonstrate a reduction in dcpolarizability of the $ 52P_{3/2}$ states over 80$\%$. Experimental findingsare in good agreement with a numerical model of the atom-dressing field systemdeveloped using the Shirley-Floquet formalism. We also demonstrate that the dcpolarizability reduction is highly anisotropic, with near total nullingpossible when the dc and dressing fields are aligned, but only a factor of tworeduction in polarizability when the fields are orthogonal. These results mayaid in stabilizing Rydberg resonances against varying dc fields present nearsurfaces, enabling advancement in the development of hybrid Rydberg atom -superconducting resonator quantum gates.

Reducing Rydberg state dc polarizability by microwave dressing