A Broadband Search for Hidden-Photon Dark Matter using a Cryogenic Reflecting Dish and Kinetic Inductance Parametric Amplifiers

Travelling-wave kinetic inductance parametric amplifiers (KIPAs) are cryogenic quantum-noise limited devices with >20 dB gain over an octave or more of bandwidth, making them well suited for microwave domain astroparticle measurements. We propose and discuss progress in an experiment coupling a 4-8 GHz KIPA to a dish and antenna system to search for hidden photon (HP) dark matter candidates. A cryogenically cooled reflector focuses HPs onto a horn antenna, which is then amplified by the KIPA. The broadband nature of the reflector experiment neatly couples to the broadband amplification provided by KIPAs and we demonstrate a first probing of the HP kinetic mixing parameter ε down to 10^-11 for HP masses between 25-30 μeV. We discuss ongoing experimental challenges and present a roadmap to achieving ε sensitivity down to 10^-13 for HP masses between 15-80 μeV.