3 papers
quant-ph2020
Characterising and bounding the set of quantum behaviours in contextuality scenarios
Anubhav Chaturvedi, Máté Farkas, Victoria J Wright
The predictions of quantum theory resist generalised noncontextual explanations. In addition to the foundational relevance of this fact, the particular extent to which quantum theo…
quant-ph2019
Gleason-type Theorems from Cauchy's Functional Equation
Victoria J Wright, Stefan Weigert
Gleason-type theorems derive the density operator and the Born rule formalism of quantum theory from the measurement postulate, by considering additive functions which assign proba…
quant-ph2018
A Gleason-type theorem for qubits based on mixtures of projective measurements
Victoria J Wright, Stefan Weigert
We derive Born's rule and the density-operator formalism for quantum systems with Hilbert spaces of dimension two or larger. Our extension of Gleason's theorem only relies upon the…