15 papers · 1 filter
Decoherence without the state: A causal quantum Darwinist approach
Nick Ormrod, Tein van der Lugt, Yìlè Yīng +1
The consistent histories formalism can be used to describe histories comprised of events across many systems, times, and places, plausibly rich enough to describe our experiences o…
A contextual advantage for conclusive exclusion: repurposing the Pusey-Barrett-Rudolph construction
Yìlè Yīng, David Schmid, Robert W. Spekkens
The task of conclusive exclusion for a set of quantum states is to find a measurement such that for each state in the set, there is an outcome that allows one to conclude with cert…
Reassessing the boundary between classical and nonclassical for individual quantum processes
Yujie Zhang, David Schmid, Yìlè Yīng +1
There is a received wisdom about where to draw the boundary between classical and nonclassical for various types of quantum processes. For multipartite states, it is the divide bet…
Quantum oracles give an advantage for identifying classical counterfactuals
Ciarán M. Gilligan-Lee, Yìlè Yīng, Jonathan Richens +1
We show that quantum oracles provide an advantage over classical oracles for answering classical counterfactual questions in causal models, or equivalently, for identifying unknown…
Extended Wigner's friend paradoxes do not require nonlocal correlations
Laurens Walleghem, Rafael Wagner, Yìlè Yīng +1
Extended Wigner's friend no-go theorems provide a modern lens for investigating the measurement problem, by making precise the challenges that arise when one attempts to model agen…
Symmetry-induced failures of tomographic locality: Constructing foil theories by twirling
Daniel Centeno, Marco Erba, Thomas D. Galley +7
Tomographic locality is a principle commonly used in the program of finding axioms that pick out quantum theory within the landscape of possible theories. The principle asserts the…