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 …

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

We show that the quantum bound for temporal correlations in a Leggett-Garg test,
analogous to the Tsirelson bound for spatial correlations in a Bell test, strongly depends on …

We show that some sets of quantum observables are unique up to an isometry and have a
contextuality witness that attains the same value for any initial state. We prove that these two …

Although'quantum contextuality'is one of the most fundamental non-classical feature, its
generic role in information processing and computation is an open quest. In this article, we …

Leggett and Garg formulated macrorealist models encoding our intuition on classical
systems, ie, physical quantities have a definite value that can be measured with minimal …

The conflict between classical and quantum physics can be identified through a series of yes-
no tests on quantum systems, without it being necessary that these systems be in special …

We solve the problem of whether a set of quantum tests reveals state-independent
contextuality and use this result to identify the simplest set of the minimal dimension. We …

One of the foundational results in quantum mechanics is the Kochen-Specker (KS) theorem,
which states that any theory whose predictions agree with quantum mechanics must be …

Contextuality is a hallmark feature of the quantum theory that captures its incompatibility with
any noncontextual hidden-variable model. The Greenberger-Horne-Zeilinger (GHZ)–type …