Cole, Jared

Date:   Tuesday, Jan. 22, 2019
Time:   10:00
Place:   ETH Zurich, Hönggerberg, HIT K 51
Host:    Oded Zilberberg

Josephson junction arrays: simple circuits, complicated physics

Jared Cole
RMIT University, Melbourne, Australia

Linear arrays of Josephson junctions display a number of interesting transport phenomena and have been suggested as a possible device for quantum metrology and current standards. Although there has been plenty of theoretical and experiment work on this system over the last 20 years, almost nothing is known about which microscopic transport mechanisms are relevant in any given parameter range. When is transport dominated by Cooper-pairs or quasi-particles? When is the current flow correlated in time? What is the role of background charge, charge noise, magnetic field and sub-gap leakage? I'll discuss the difficulties involved in developing a general microscopic model, as well as detailing our theoretical and experimental progress in this direction.