# Evidence of Majorana Zero Modes in Josephson Trijunctions

## TL;DR

This paper provides experimental evidence of Majorana zero modes in Josephson trijunctions on topological insulators, supporting theoretical models and advancing the potential for topological quantum computing.

## Contribution

It presents phase-sensitive experimental evidence of Majorana zero modes in Josephson trijunctions, confirming theoretical predictions and demonstrating a scalable platform for topological quantum computation.

## Key findings

- Observation of a protected minigap at the trijunction center
- Support for the Majorana phase diagram by Fu and Kane
- Advancement towards braiding MZMs in a 2D platform

## Abstract

In search of fault-tolerant topological quantum computation (TQC), zero-bias conductance peak as a necessary signature of Majorana zero modes (MZMs) has been observed in a number of solid-state systems. Here, we present the signature of MZMs from a phase-sensitive experiment on Josephson trijunctions constructed on the surface of three-dimensional topological insulators. We observed that the minigap at the center of the trijunction is protected to close over extended regions in phase space, supporting in principle the Majorana phase diagram proposed by Fu and Kane in 2008. Our study paves the way for further braiding MZMs and exploring TQC on a scalable two-dimensional platform.