Quantum communications is the art of exchanging and manipulating information beyond the
capabilities of the conventional technologies using the laws of quantum mechanics. With …

This progress report covers recent developments in the area of quantum randomness, which
is an extraordinarily interdisciplinary area that belongs not only to physics, but also to …

Superposition, entanglement and non-locality constitute fundamental features of quantum
physics. The fact that quantum physics does not follow the principle of local causality,–can …

Local realism is the worldview in which physical properties of objects exist independently of
measurement and where physical influences cannot travel faster than the speed of light …

We present a loophole-free violation of local realism using entangled photon pairs. We
ensure that all relevant events in our Bell test are spacelike separated by placing the parties …

More than 50 years ago, John Bell proved that no theory of nature that obeys locality and
realism can reproduce all the predictions of quantum theory: in any local-realist theory, the …

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 physics can be exploited to generate true random numbers, which have important
roles in many applications, especially in cryptography. Genuine randomness from 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 …

A Bell test is a randomized trial that compares experimental observations against the
philosophical worldview of local realism. A Bell test requires spatially distributed …