Near quantum-noise limited amplifiers for the Project 8 neutrino mass experiment

Project 8 is a proposed neutrino-mass experiment using tritium beta decay. The targeted sensitivity of 40 meV, covering the entire mass region allowed in the inverted neutrino mass hierarchy, imposes stringent requirements on all subsystems. In particular, low-noise high-gain amplifiers are needed to collect cyclotron radiation emitted by magnetically trapped electrons at the tritium endpoint. Josephson Traveling Wave Parametric Amplifiers (JTWPAs) are broadband and near quantum-noise limited amplifiers in the 5-10 GHz range, which have been developed for applications such as multiplexed superconducting qubit readout. Project 8 has partnered with quantum system engineers to adapt JTWPAs to its needs: with an operating frequency around 25 GHz and coupled to a free space antenna. I will present the recent progress in making JTWPAs compatible with Project 8.