IQP Seminar: Quantum Computation using Majorana-Based Topological Qubits

by Roman Lutchyn (Station Q)

Wednesday 9 Jul 2025, 13:30 → 15:00 Europe/Berlin

ZOQ

Abstract: 

Research in quantum computing has provided numerous new physical insights and the potential to exponentially increase computational power for solving significant problems in science and technology. The primary obstacle to building a scalable quantum computer is errors caused by decoherence. Topological quantum computing addresses this challenge by utilizing topological materials that inherently limit errors.

In this talk, I will discuss the engineering of topological superconductors that support Majorana zero-energy modes at the interface between a conventional superconductor (Aluminum) and a semiconductor with spin-orbit interaction (Indium Arsenide). I will present recent findings from the Microsoft Quantum team that indicate the emergence of topological superconductivity in proximitized semiconductor nanowires. Additionally, I will cover recent measurements of fermion parity, which represent a step towards the fusion of Majorana zero modes. Finally, I will outline a proposal for scalable quantum computing that involves topological qubits composed of superconducting islands, hosting aggregates of four or more Majorana zero modes.

****

 

Upcoming event:

 

July 16, Tomke Glier (INF)