From Josephson junction metamaterials to tunable pseudo-cavities

TL;DR

This paper explores how Josephson junctions can be used to create tunable, broadband resonant mirrors and cavities, connecting quantum metamaterials with coupled cavity arrays, and discusses nonlinear effects on scattering.

Contribution

It introduces methods to make tunable, broadband mirrors from Josephson junctions and demonstrates their application in constructing cavities, bridging two research fields.

Findings

Design of tunable, broadband resonant mirrors using Josephson junctions

Construction of cavities from these mirrors for quantum metamaterials

Analysis of nonlinear corrections affecting scattering measurements

Abstract

The scattering through a Josephson junction interrupting a superconducting line is revisited including power leakage. We discuss also how to make tunable and broadband resonant mirrors by concatenating junctions. As an application, we show how to construct cavities using these mirrors, thus connecting two research fields: JJ quantum metamaterials and coupled cavity arrays. We finish by discussing the first non-linear corrections to the scattering and their measurable effects.