231 citations · 1.7k across the 53 of their papers we have counts for
5 papers · 1 filter
Incoherent dynamics in the toric code subject to disorder
Beat Röthlisberger, James R. Wootton, Robert M. Heath +2
We numerically study the effects of two forms of quenched disorder on the anyons of the toric code. Firstly, a new class of codes based on random lattices of stabilizer operators i…
A witness for topological order and stable quantum memories in abelian anyonic systems
James R. Wootton
We propose a novel parameter, the anyonic topological entropy, designed to detect the error correcting phase of a topological memory. Unlike similar quantities such as the topologi…
Long-distance spin-spin coupling via floating gates
Luka Trifunovic, Oliver Dial, Mircea Trif +4
The electron spin is a natural two level system that allows a qubit to be encoded. When localized in a gate defined quantum dot, the electron spin provides a promising platform for…
Towards unambiguous calculation of the topological entropy for mixed states
James R. Wootton
Calculation of topological order parameters, such as the topological entropy and topological mutual information, are used to determine whether states possess topological order. The…
Bringing order through disorder: Localization of errors in topological quantum memories
James R. Wootton, Jiannis K. Pachos
Anderson localization emerges in quantum systems when randomised parameters cause the exponential suppression of motion. Here we consider this phenomenon in topological models and…