119 citations · 1.1k across the 47 of their papers we have counts for
48 papers
A Quantum Theory with Non-Collapsing Measurements
Vincenzo Fiorentino, Stefan Weigert
A collapse-free version of quantum theory is examined to systematically study the role of the projection postulate. This foil theory assumes "passive" measurements that do not upda…
Uncertainty relations for the support of quantum states
Vincenzo Fiorentino, Stefan Weigert
Given a narrow signal over the real line, there is a limit to the localisation of its Fourier transform. In spaces of prime dimensions, Tao derived a sharp state-independent uncert…
General Probabilistic Theories with a Gleason-type Theorem
Victoria J Wright, Stefan Weigert
Gleason-type theorems for quantum theory allow one to recover the quantum state space by assuming that (i) states consistently assign probabilities to measurement outcomes and that…
Optimal Detection of Rotations about Unknown Axes by Coherent and Anticoherent States
John Martin, Stefan Weigert, Olivier Giraud
Coherent and anticoherent states of spin systems up to spin j=2 are known to be optimal in order to detect rotations by a known angle but unknown rotation axis. These optimal quant…
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…
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…