Flux Qubit Based on Hybrid Ferromagnetic-Superconducting Device

TL;DR

This paper proposes a new flux qubit design using a hybrid ferromagnetic-superconducting device, where flux bias is generated solely by the vector potential without magnetic field, supported by theoretical and simulation analysis.

Contribution

It introduces a novel flux qubit architecture leveraging vector potential for flux bias, combining ferromagnetic and superconducting materials with detailed theoretical and simulation validation.

Findings

Flux bias achieved without magnetic field

Theoretical analysis confirms feasibility

Simulations support practical implementation

Abstract

We propose a realization of flux qubit based on the hybrid ferromagnetic-superconducting device where the flux bias is induced purely by vector potential of the vanishing magnetic field. We support our conclusions with theoretical analysis and self-consistent three-dimensional simulations for material specific parameters.