Millimeter-wave photons in hybrid cavity-QED systems

Millimeter-wave frequencies offer many advantages for hybrid experiments with cold atoms, spin defects, and superconducting circuits. Simultaneously, the millimeter-wave band could be a powerful independent platform for quantum information technology at 1 K, enabling lower cost, more flexibility, and viable transfer of information. In this talk, I will present new developments from our hybrid experiment for interfacing single optical and mm-wave photons using Rydberg atoms, including measurement of the hybrid cavity and observation of mm-wave and optical hybridization through coupling to Rydberg states of atoms. I will also outline the prospects of this platform for transduction and nonlinear photonics experiments.