A chip-scale Rydberg-atom superheterodyne receiver inside a compact high-frequency cavity could search for hidden-photon dark matter in the 5×10^-5–7×10^-4 eV mass range with sensitivity down to ε~10^-11.
A Tunable High-Q Millimeter Wave Cavity for Hybrid Circuit and Cavity QED Experiments,
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Enhanced Rydberg-Atom Superheterodyne Detection of Hidden-Photon Dark Matter on Chips
A chip-scale Rydberg-atom superheterodyne receiver inside a compact high-frequency cavity could search for hidden-photon dark matter in the 5×10^-5–7×10^-4 eV mass range with sensitivity down to ε~10^-11.