Trilayer josephson junction and associated fabrication method

Abstract

A Josephson junction includes a substrate, a trilayer stack, and a wiring layer. The trilayer stack includes a base electrode located directly on a top face of the substrate, an internal layer located on top of the base electrode, a barrier layer located on top of the internal layer, and a counter electrode located on top of the barrier layer and fully covering the barrier layer. The wiring layer is electrically connected to the counter electrode and includes a top section located directly on top of the counter electrode, a bottom section located directly on the top face of the substrate and adjacent to the base electrode, and a middle section directly connecting between the top section and the bottom section such that the middle section forms a gap with the trilayer stack. No spacer material directly contacts the trilayer stack.

Dependencies are inferred from the claim text.