Exponential Protection of Zero Modes in Majorana Islands

Demonstrates exponential protection of Majorana zero modes in semiconductor-superconductor islands (InAs/Al nanowires). Coulomb blockade spectroscopy reveals that the ground-state energy splitting oscillates and decreases exponentially with nanowire length — a key signature predicted for Majorana zero modes and evidence for topological protection.

Key Results

• Exponential suppression of zero-mode splitting with device length
• Coulomb blockade spectroscopy of Majorana islands
• InAs/Al epitaxial nanowire devices
• Even-odd ground state parity transitions observed

Links

• Journal: Nature
• arXiv: 1603.03217