Statics of non uniform Josephson junction parallel arrays: model vs. experiment

Abstract

We study experimentally and numerically the zero-voltage supercurrent vs. magnetic field of non-uniform arrays of Josephson junctions parallel-connected by a superconducting stripline. The measured curves are complex, unique and in excellent agreement with numerical simulations using a specially developed model. Using this, we can optimize the arrays to have any desired interference pattern. Such new devices could find applications in magnetometry, quasiparticle mixers and detectors, flux-flow oscillators and superconducting electronics.

The statics of non uniform Josephson junction arrays can been explained very simply using the new model that we introduce. This can have many important consequences from applied quantum computing to Terahertz integrated receivers