We present a new exclusion bound of axion-like particle dark matter with axion-photon couplings above 10−13GeV−1 over the frequency range 4796.7--4799.5 MHz, corresponding to a narrow range of axion masses centered around 19.84 μeV. This measurement represents the first implementation of a Josephson Traveling Wave Parametric Amplifier (JTWPA) in a dark matter search. The JTWPA was operated in the insert of the Axion Dark Matter eXperiment (ADMX) as part of an independent receiver chain that was attached to a 0.588-liter cavity. The ability of the JTWPA to deliver high gain over a wide (3 GHz) bandwidth has engendered interest from those aiming to perform broadband axion searches, a longstanding goal in this field.
@article{arxiv.2110.10262,
title = {Dark Matter Axion Search Using a Josephson Traveling Wave Parametric Amplifier},
author = {C. Bartram and T. Braine and R. Cervantes and N. Crisosto and N. Du and G. Leum and P. Mohapatra and T. Nitta and L. J Rosenberg and G. Rybka and J. Yang and John Clarke and I. Siddiqi and A. Agrawal and A. V. Dixit and M. H. Awida and A. S. Chou and M. Hollister and S. Knirck and A. Sonnenschein and W. Wester and J. R. Gleason and A. T. Hipp and S. Jois and P. Sikivie and N. S. Sullivan and D. B. Tanner and S. Hoof and E. Lentz and R. Khatiwada and G. Carosi and C. Cisneros and N. Robertson and N. Woollett and L. D. Duffy and C. Boutan and M. Jones and B. H. LaRoque and N. S. Oblath and M. S. Taubman and E. J. Daw and M. G. Perry and J. H. Buckley and C. Gaikwad and J. Hoffman and K. Murch and M. Goryachev and B. T. McAllister and A. Quiskamp and C. Thomson and M. E. Tobar},
journal= {arXiv preprint arXiv:2110.10262},
year = {2023}
}