Wavefunctions for topological quantum registers

TL;DR

This paper constructs explicit wavefunctions for non-abelian quantum Hall states with quasi-hole excitations, demonstrating their potential for topological quantum computing through braiding properties.

Contribution

It provides explicit wavefunctions and braid properties for various non-abelian quantum Hall states, including the paired spin-singlet state with Fibonacci anyon characteristics.

Findings

Braid properties of quasi-holes are derived from explicit wavefunctions.

Paired spin-singlet state exhibits Fibonacci anyon braiding.

Wavefunctions are computed using parafermionic conformal field theories.

Abstract

We present explicit wavefunctions for quasi-hole excitations over a variety of non-abelian quantum Hall states: the Read-Rezayi states with k\geq 3 clustering properties and a paired spin-singlet quantum Hall state. Quasi-holes over these states constitute a topological quantum register, which can be addressed by braiding quasi-holes. We obtain the braid properties by direct inspection of the quasi-hole wavefunctions. We establish that the braid properties for the paired spin-singlet state are those of `Fibonacci anyons', and thus suitable for universal quantum computation. Our derivations in this paper rely on explicit computations in the parafermionic Conformal Field Theories that underly these particular quantum Hall states.