Exciton-polariton mediated superconductivity

TL;DR

This paper explores how exciton-polariton Bose-Einstein condensates in microcavities can significantly enhance the critical temperature of superconductivity, offering a new pathway for high-temperature superconductors.

Contribution

It introduces a novel mechanism where exciton-polariton condensates replace virtual excitons to mediate superconductivity, demonstrating potential for higher critical temperatures.

Findings

Critical temperature increases with polariton condensate population

Microcavity setup enables control over superconducting properties

Potential for achieving high-temperature superconductivity

Abstract

We revisit the exciton mechanism of superconductivity in the framework of microcavity physics, replacing virtual excitons as a binding agent of Cooper pairs by excitations of an exciton-polariton Bose-Einstein condensate. We consider a model microcavity where a quantum well with a two dimensional electron gas is sandwiched between two undoped quantum wells, where a polariton condensate is formed. We show that the critical temperature for superconductivity dramatically increases with the condensate population, opening a new route towards high temperature superconductivity.