Quantum computers promise considerable speedups with respect to their classical
counterparts. However, the identification of the innately quantum features that enable these …

Quantum neural networks have been widely studied in recent years, given their potential
practical utility and recent results regarding their ability to efficiently express certain classical …

Anomalous weak values and the Wigner function's negativity are well-known witnesses of
quantum contextuality. We show that these effects occur when analyzing the energetics of a …

A web of cohomological facts relates quantum error correction, measurement-based
quantum computation, symmetry protected topological order and contextuality. Here we …

The generation of entangled states that display negative values of the Wigner function in the
quantum phase space is a challenging task, particularly elusive for massive, and possibly …

Determining the best attainable threshold for qudit magic state distillation is directly related
to the question of whether or not contextuality is sufficient for universal quantum …

We develop the theory of Wigner representations for general probabilistic theories (GPTs), a
large class of operational theories that include both classical and quantum theory. The …

Quasiprobability representations serve as a bridge between classical and quantum
descriptions of physical systems. In these representations, nonnegativity allows for a …