Coupling between Josephson junctions and microstriplines

A promising method for microwave coupling to thin-film Josephson devices via microstripline techniques has been developed which has significant advantages over more traditional waveguide techniques. In particular, direct determination of intrinsic junction cavity parameters such as the geometrical resonance frequencies and Q values are made practical and compact cryogenic multi-octave microwave holders readily realized. The results of coupling experiments with Pb-Pb oxide-Pb and Nb-Nb oxide-Pb tunnel junctions are discussed and applications of these results to the design and construction of shielded single junction 2e/h devices and small multi-junction arrays are described.