# Topological Superconductivity & Majorana Modes: State of the Field (October 2026)

Research dossier · v1 · updated 2026-10-30 · 3,427 words · 44 sources · 29 claims · verification: verified

This briefing reviews Majorana zero modes and topological superconductivity as of late October 2026, covering semiconductor-superconductor nanowires, quantum-dot Kitaev chains, vortex and magnetic-atom platforms, and the Majorana parity-qubit program. Its central takeaway is that zero-bias peaks alone do not establish a topological phase, that the protocol used to certify hybrid devices is disputed, and that the newest qubit results are preprints awaiting independent replication.

## Contents

- Executive summary
- Background and core concepts
- Timeline of key milestones
- State of the art
  - Nanowires and zero-bias peaks
  - Quantum-dot Kitaev chains
  - Parity readout and tetron devices
  - Majorana parity qubit in minimal Kitaev chains
  - Vortex and magnetic-atom platforms
  - Quantitative benchmarks
- Open problems and active debates
- Major programs and players
- Outlook: what to watch (near term)
- Key papers
- Glossary

## Sample findings

- Partially separated Andreev bound states can produce conductance plateaus near 2e²/h over broad parameter ranges without Majorana zero modes.
- Majorana-like resonances, including zero-bias pinning, become common in InSb nanowire devices at finite magnetic field.

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