Whether positive operator-valued measures (POVMs) provide advantages in demonstrating
Bell nonlocality has remained unknown, even in the simple scenario of Einstein-Podolsky …

In Bell scenarios with two outcomes per party, we algorithmically consider the two sides of
the membership problem for the local polytope: Constructing local models and deriving …

We consider the problem of reproducing the correlations obtained by arbitrary local
projective measurements on the two-qubit Werner state $\rho= v|\psi_-\rangle\langle\psi …

Nonlocal quantum correlation is at the heart of the bizarre nature of quantum physics. While
there are various classes of nonlocal quantum correlation, steerability of a quantum state by …

Measurement correlations in quantum systems can exhibit non-local behavior, a
fundamental aspect of quantum mechanics with applications such as device-independent …

In quantum theory, Bell locality of quantum states (generally, of correlations, or boxes) is
characterized by local hidden variable models (LHVMs) given by integrals and sums. We …

We present a scheme, based on Gilbert's algorithm for quadratic minimization [SIAM J.
Contrl., vol. 4, pp. 61-80, 1966], to prove separation between a point and an arbitrary convex …

We consider Bell tests in which the distant observers can perform local filtering before
testing a Bell inequality. Notably, in this setup, certain entangled states admitting a local …

In this paper, we prove that KG (3)< KG (4), where KG (d) denotes the Grothendieck constant
of order d. To this end, we use a branch-and-bound algorithm commonly used in the solution …

Grothendieck constants $ K_G (d) $ bound the advantage of $ d $-dimensional strategies
over $1 $-dimensional ones in a specific optimisation task. They have applications ranging …