The most famous quasi-probability distribution, the Wigner function, has played a pivotal role
in the development of a continuous-variable quantum theory that has clear analogues of …

Generalisation in machine learning often relies on the ability to encode structures present in
data into an inductive bias of the model class. To understand the power of quantum machine …

Interference phenomena are often claimed to resist classical explanation. However, such
claims are undermined by the fact that the specific aspects of the phenomenology upon …

Kirkwood-Dirac representations of quantum states are increasingly finding use in many
areas within quantum theory. Usually, representations of this sort are only applied to provide …

Quantum interference phenomena are widely viewed as posing a challenge to the classical
worldview. Feynman even went so far as to proclaim that they are the $\textit {only mystery} …

In this paper we relate notions of nonclassicality in what is known as the simplest nontrivial
scenario (a prepare and measure scenario composed of four preparations and two binary …

Generalized contextuality is the notion of nonclassicality powering up a myriad of quantum
tasks, among which is the celebrated case of a two-party information processing task where …

It is commonly believed that failures of tomographic completeness undermine assessments
of nonclassicality in noncontextuality experiments. In this work, we study how such failures …

Pawłowski and Winter's hyperbit theory, proposed in 2012, presented itself as an alternative
to quantum theory, suggesting novel ways of redefining entanglement and classical …

What is fundamentally quantum? We argue that most of the features, problems, and
paradoxes--such as the measurement problem, the Wigner's friend paradox and its …