Am 22. Juni 2026, 12 Uhr c.t., findet unser nächstes Physikalisches Kolloquium statt. Prof. Stephan Rachel ist Professor für Theoretische Physik Kondensierter Materie an der Universität Melbourne. Er hält einen Vortrag zum Thema „Topological Quantum Computing in the Real World“.
Abstract von Prof. Rachel:
Fault tolerance is one of the central challenges in quantum computing. A promising route toward intrinsically protected quantum information processing is topological quantum computing, based on the braiding and fusion of anyons. Anyons are exotic quasiparticles – neither bosons nor fermions — that can emerge in topological superconductors and exhibit non-trivial exchange statistics. These statistics provide a natural framework for encoding and manipulating quantum information in a way that is inherently robust against local perturbations.
In this talk, I will introduce the physical and mathematical principles underlying topological quantum computation and discuss how anyonic degrees of freedom can be realized in realistic systems. Using explicit time-evolution protocols, I will demonstrate how braiding operations with multiple anyons can generate the Clifford gate set.
In the second part of the talk, I will turn to the limitations and practical challenges facing topological quantum computers. Despite their reputation for fault tolerance, these systems are not immune to errors in general. I will discuss several important error mechanisms that arise in realistic settings and, for some of them, present theoretical ideas for mitigating their effects.
Prof. Dr. Ilya Eremin gibt eine Einführung in den Vortrag.
Die Fakultät lädt alle Interessierten herzlich ein. Die Veranstaltung findet im Hörsaal HNB statt.
Foto: © Depositphotos / ArtemisDiana