QCD axion is a well-motivated dark matter candidate which is capable of solving the strong CP problem and explaining the abundance of dark matter at the same time. Axion Dark Matter eXperiment (ADMX) searches for conversions of QCD axions into microwave photons with high-Q tunable resonators running in a strong magnetic field. In the current ADMX Gen 2 phase, thanks to an ultra-low-noise...
This talk will review the results from ABRACADABRA-10 cm, the status of the DMRadio suite of experiments including DMRadio-50L and DMRadio-m$^3$, and the plans for a next-generation GUT-scale-sensitive experiment, DMRadio-GUT. These experiments search for the coupling of axionic dark matter to electromagnetism at masses below 1 $\mu$eV. Axions at these lower mass ranges can naturally be...
The dark matter puzzle is one of the most important open problems in modern physics. The axion is a compelling dark matter candidate, since it resolves the strong-CP problem of quantum chromodynamics. I will focus on the Cosmic Axion Spin Precession Experiments (CASPEr-electric, CASPEr-gradient) that use nuclear magnetic resonance to search for the EDM and the gradient interactions of...
We report details on the axion dark matter search experiment that uses the new technologies of a high-temperature superconducting (HTS) magnet and a Josephson parametric converter (JPC). An 18 T HTS solenoid magnet is developed for this experiment. The JPC is used as the first stage amplifier to achieve a near quantum-limited low-noise condition. A first dark-matter axion search was performed...
Latest lattice-QCD simulations predict dark matter axions with a mass around 100 μeV if the Peccei-Quinn symmetry was broken after cosmic inflation. This mass range, however, is hardly explored by the current experiments. This talk will introduce a novel traveling-wave-based detector, the dielectric haloscope, to increase sensitivity to the suggested mass range. The MADMAX collaboration aims...
