Supercurrents in chiral channels originate from upstream information transfer: a theoretical prediction

TL;DR

This paper predicts theoretically that supercurrents can flow in chiral channels via upstream information transfer, challenging previous assumptions about their inability to support supercurrents.

Contribution

It introduces a new mechanism for supercurrent in chiral channels based on non-local interactions enabling upstream information transfer.

Findings

Supercurrent can be mediated by non-local interactions in chiral channels.

Supercurrent is possible despite traditional beliefs about chiral edge channels.

External circuit models support the theoretical prediction.

Abstract

It has been thought that the long chiral edge channels cannot support any supercurrent between the superconducting electrodes. We show theoretically that the supercurrent can be mediated by a non-local interaction that facilitates a long-distance information transfer in the direction opposite to electron flow. We compute the supercurrent for several interaction models, including that of an external circuit.