Quantum superposition of high-dimensional states enables both computational speed-up
and security in cryptographic protocols. However, the exponential complexity of tomographic …

Quantum theory is traditionally formulated using complex numbers. This imaginarity of
quantum theory has been quantified as a resource with applications in discrimination tasks …

Abstract Weak values and Kirkwood–Dirac (KD) quasiprobability distributions have been
independently associated with both foundational issues in quantum theory and advantages …

We analyse nonclassical resources in interference phenomena using generalized
noncontextuality inequalities and basis-independent coherence witnesses. We use recently …

Quantum coherence, nonlocality, and contextuality are key resources for quantum
advantage in metrology, communication, and computation. We introduce a graph-based …

The geometrical arrangement of a set of quantum states can be completely characterized
using relational information only. This information is encoded in the pairwise state overlaps …

We show how coherences between identical constituents of a many-body quantum state can
be interrogated by suitable correlation functions and identify sufficient conditions under …

The resource theory of contextuality considers resourceful objects to be probabilistic data
tables, known as correlations or behaviors, that fail to have an explanation in terms of …

We discuss the local equilibration of closed systems using the relative purity, a paradigmatic
information-theoretic distinguishability measure that finds applications ranging from …

The use of quantum information in technology promises to supersede the so-called classical
devices used nowadays. Understanding what features are inherently non-classical is crucial …