Quantized Majorana conductance
Hao Zhang, Chun-Xiao Liu, Sasa Gazibegovic, Di Xu, John A. Logan,, Guanzhong Wang, Nick van Loo, Jouri D.S. Bommer, Michiel W.A. de Moor, Diana, Car, Roy L. M. Op het Veld, Petrus J. van Veldhoven, Sebastian Koelling,, Marcel A. Verheijen, Mihir Pendharkar, Daniel J. Pennachio

TL;DR
This paper reports the experimental observation of a quantized zero-bias conductance plateau at 2e2/h in InSb nanowires, providing strong evidence for Majorana zero-modes relevant for topological quantum computing.
Contribution
First experimental demonstration of a stable, quantized Majorana conductance plateau in semiconductor nanowires, confirming key theoretical predictions.
Findings
Quantized conductance plateau at 2e2/h observed
Plateau remains stable under varying magnetic fields and tunnel couplings
Supports the existence of Majorana zero-modes in the system
Abstract
Majorana zero-modes hold great promise for topological quantum computing. Tunnelling spectroscopy in electrical transport is the primary tool to identify the presence of Majorana zero-modes, for instance as a zero-bias peak (ZBP) in differential-conductance. The Majorana ZBP-height is predicted to be quantized at the universal conductance value of 2e2/h at zero temperature. Interestingly, this quantization is a direct consequence of the famous Majorana symmetry, 'particle equals antiparticle'. The Majorana symmetry protects the quantization against disorder, interactions, and variations in the tunnel coupling. Previous experiments, however, have shown ZBPs much smaller than 2e2/h, with a recent observation of a peak-height close to 2e2/h. Here, we report a quantized conductance plateau at 2e2/h in the zero-bias conductance measured in InSb semiconductor nanowires covered with an Al…
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