Dynamic electromagnetic response of three-dimensional Josephson junction arrays

TL;DR

This paper develops a theoretical framework for 3D Josephson junction arrays, revealing their potential as highly sensitive 3D-SQUIDs capable of reconstructing external electromagnetic fields with phase information, useful for advanced sensing devices.

Contribution

It introduces a new theoretical model for 3D Josephson junction arrays and demonstrates their advantages over planar SQUIDs in electromagnetic field detection.

Findings

3D Josephson arrays act as highly sensitive 3D-SQUIDs

The voltage response encodes vector and phase information of external fields

Potential applications in magnetometers, gradiometers, and particle detectors

Abstract

We present a theoretical study on the dynamical properties of three-dimensional arrays of Josephson junctions. Our results indicate that such superconducting networks represent highly sensitive 3D-SQUIDs having some major advantages in comparison with conventional planar SQUIDs. The voltage response function of 3D-SQUIDs is directly related to the vector-character of external electromagnetic fields. The theory developed here allows the three-dimensional reconstruction of a detected external field including phase information about the field variables. Applications include the design of novel magnetometers, gradiometers and particle detectors.