Control of Rydberg Interactions via Microwave Dressing

We explore the use of microwave dressing to control Rydberg interactions in an ensemble-based single-photon source. Our experimental setup allows for arbitrary control of the microwave polarization, power, and detuning, and we demonstrate that these parameters allow for both suppression and enhancement of the second-order correlation function g⁽²⁾(0). We explore the interplay between increased dephasing and stronger blockade in this system. We also support our experimental findings with Floquet calculations. This tunability will both enable new opportunities in the study of a few strongly interacting particles and improve and expand applications in Rydberg-based quantum technologies.