Superconducting Topological Fluids in Josephson Junction Arrays

TL;DR

This paper proposes that frustrated Josephson junction arrays can host a topologically ordered superconducting state, offering a novel mechanism for superconductivity distinct from traditional theories.

Contribution

It introduces a topological mechanism for superconductivity in Josephson junction arrays, expanding understanding of quantum fluids with topological order.

Findings

Support for topologically ordered superconducting ground state

Ground state degeneracy on the torus

Superconductivity arising from topological mechanisms

Abstract

We argue that the frustrated Josephson junction arrays may support a topologically ordered superconducting ground state, characterized by a non-trivial ground state degeneracy on the torus. This superconducting quantum fluid provides an explicit example of a system in which superconductivity arises from a topological mechanism rather than from the usual Landau-Ginzburg mechanism.