One of the best signatures of nonclassicality in a quantum system is the existence of
correlations that have no classical counterpart. Different methods for quantifying the …

A central result in the foundations of quantum mechanics is the Kochen-Specker theorem. In
short, it states that quantum mechanics is in conflict with classical models in which the result …

We present a protocol which allows a client to have a server carry out a quantum
computation for her such that the client's inputs, outputs and computation remain perfectly …

Generative modeling using samples drawn from the probability distribution constitutes a
powerful approach for unsupervised machine learning. Quantum mechanical systems can …

Blind quantum computing (BQC) allows a client to have a server carry out a quantum
computation for them such that the client's input, output, and computation remain private. A …

We consider the contextual fraction as a quantitative measure of contextuality of empirical
models, ie, tables of probabilities of measurement outcomes in an experimental scenario. It …

We describe a universal scheme of quantum computation by state injection on rebits (states
with real density matrices). For this scheme, we establish contextuality and Wigner function …

It is often argued that entanglement is at the root of the speedup for quantum compared to
classical computation, and that one needs a sufficient amount of entanglement for this …

We show, under natural assumptions for qubit systems, that measurement-based quantum
computations (MBQCs) which compute a nonlinear Boolean function with a high probability …

The problem of separating classical from quantum correlations is, in general, intractable and
has been solved explicitly only in a few cases. In particular, known methods cannot provide …