Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

Bell's theorem rules out many potential reformulations of quantum mechanics, but within a
generalized framework it does not exclude all locally mediated models. Such models …

An experimental test of Bell's inequality allows ruling out any local-realistic description of
nature by measuring correlations between distant systems. While such tests are …

Quantum mechanics has irked physicists ever since its conception more than 100 years ago.
While some of the misgivings, such as it being unintuitive, are merely aesthetic, quantum …

In this Letter, we present a cosmic Bell experiment with polarization-entangled photons, in
which measurement settings were determined based on real-time measurements of the …

A Bell test is a randomized trial that compares experimental observations against the
philosophical worldview of local realism, in which the properties of the physical world are …

Quantum nonlocality is usually associated with entangled states by their violations of Bell-
type inequalities. However, even unentangled systems, whose parts may have been …

Nonlocality was discovered by John Bell in 1964, in the context of the debates about
quantum theory, but is a phenomenon that can be studied in its own right. Its observation …

Quantum mechanics provides the means of generating genuine randomness that is
impossible with deterministic classical processes. Remarkably, the unpredictability of …

We study the genuine tripartite nonlocality (GTN) and the genuine tripartite entanglement
(GTE) of Dirac fields in the background of a Schwarzschild black hole. We find that the …