Connor Shelly - OQC

Technical Blog

Tuning of Josephson junctions – the effects of depinning physics

This research explores ways to model post-manufacture tuning of Josephson junction parameters, investigating how junction…

Abbie CurbisonFebruary 26, 2025

Technical Blog

Analysing variations in Josephson junction barriers using a combined approach

In our recent research, we consider multiple techniques to understand the make-up of Josephson junctions,…

Abbie CurbisonFebruary 19, 2025

(a) As-fabricated Josephson junction resistances from a typical OQC Lucy-8QPU wafer. JJ resistances are in three separate design groups 1, 2, and 3, designated by the colours grey, red, and blue. (b) The same wafer having undergone our electron-beam annealing process. The spread of each JJ group is reduced.

Technical Blog

E-beam annealing of Josephson junctions offers precise control over qubit frequencies

Electron-beam (e-beam) annealing of Josephson junctions offers precise control over qubit frequencies post-fabrication.

Abbie CurbisonMarch 14, 2024