Demonstrate a charged Majorana-to-Dirac converter for an electrical cross-check

Demonstrate local coexistence and integration of a charged chiral quantum-anomalous-Hall or normal edge with the superconducting Majorana domain wall in rhombohedral graphene, thereby enabling the optional charge-based vortex-parity cross-check.

Background

The core proposal uses thermal transport and does not require charge readout. An independent electrical cross-check would require a genuine charged chiral Dirac channel that can be converted into the two neutral Majorana branches on the superconducting wall.

Although quantum-anomalous-Hall and superconducting phases have each been reported in the rhombohedral-graphene family, the paper identifies their required local coexistence in a converter geometry as an unresolved experimental capability.

References

Quantum anomalous Hall and superconducting phases are both known in the rhombohedral-graphene family, but their local coexistence in the required converter geometry has not been demonstrated.

— Self-calibrating thermal interferometry of vortex parity in a two-dimensional chiral superconductor  (2608.19343 - Ghosh, 19 Aug 2026) in Section 5.4, “Optional charge-based cross-check”

Establishing that window, for a stated material stack, is the first task, and it is a microscopic calculation rather than a matter of framing: the conversion length and the inter-edge equilibration length must be estimated in the same model and compared.

— Topological and kinetic origins of fractional thermal conductance at the topological insulator--superconductor interface  (2610.10011 - Jacobs et al., 7 Oct 2026) in Section 5, “Open problems and future directions,” first problem; see also Section 3.2