Josephson Junction Quantum Electronics and ADMX

Josephson junctions have numerous applications in quantum electronic devices. One specific application of Josephson junctions is used in the Axion Dark Matter eXperiment in the form of a highly sensitive SQUID microwave amplifier. I will review the basic physics of Josephson junctions as well as their characterization at both cryogenic and room temperatures. Preliminary data from Josephson foundry process developed at the Washington Nano-fabrication facility will be presented.