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 …

In contrast to the spatial Bell's inequalities which probe entanglement between spatially
separated systems, the Leggett–Garg inequalities test the correlations of a single system …

In this tutorial, we present the definition, interpretation, and properties of some of the main
quasiprobabilities that can describe the statistics of measurement outcomes evaluated at …

Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

Quantum coherence is one of the primary non-classical features of quantum systems. While
protocols such as the Leggett-Garg inequality (LGI) and quantum tomography can be used …

In the classical domain, it is well known that divisibility does not imply that a stochastic
process is Markovian. However, for quantum processes, divisibility is often considered to be …

Macroscopic realism is the name for a class of modifications to quantum theory that allow
macroscopic objects to be described in a measurement-independent manner, while largely …

We propose an experimentally accessible scheme to determine the lower bounds on the
quantum Fisher information (QFI), which ascertains multipartite entanglement or usefulness …

Tests of local realism and macrorealism have historically been discussed in very similar
terms: Leggett-Garg inequalities follow Bell inequalities as necessary conditions for classical …

The noncommutativity of position and momentum observables is a hallmark feature of
quantum physics. However, this incompatibility does not extend to observables that are …