20 citations · 64 across the 17 of their papers we have counts for
6 papers · 2 filters
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…
A structure theorem for complex-valued quasiprobability representations of physical theories
Rafael Wagner, Roberto D. Baldijão, Matthias Salzger +3
Quasiprobability representations are well-established tools in quantum information science, with applications ranging from the classical simulability of quantum computation to quan…
Copenhagenish interpretations of quantum mechanics
David Schmid, Yìlè Yīng, Matthew Leifer
We define a class of Copenhagenish interpretations encompassing modern interpretations that follow the Copenhagen spirit. These interpretations are characterized by four postulates…
On whether quantum theory needs complex numbers: the foil theories perspective
Yìlè Yīng, Maria Ciudad Alañón, Daniel Centeno +5
Recent work by Renou et al. (2021) has led to some controversy concerning the question of whether quantum theory requires complex numbers for its formulation. We promote the view t…
Quantifiers and witnesses for the nonclassicality of measurements and of states
Yujie Zhang, Yìlè Yīng, David Schmid
In recent work Phys. Rev. X 16, 021050, we proposed a unified notion of nonclassicality that applies to arbitrary processes in quantum theory, including individual quantum states,…
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…