In our recent paper we fabricated highly transparent and nanometer-scale superconducting junctions to a graphene QH system. When subjected to low temperatures and high magnetic fields they observed that the chemical potential of the Quantum edge states across the superconducting electrode exhibited a sign reversal, which provided direct evidence of crossed Andreev process across a Quantum Hall edge. This electron-hole conversion mechanism is of paramount importance since this hybrid SC/QH system represents a novel route to creation and understanding of hybrid systems for quantum information processing, which is a promising pathway to create isolated non-Abelian anyonic zero modes which are predicted as potential building blocks of a topological quantum computer in the future.
- Dmitri presented at Harvard University
- APS Physics highlight