In the context of quantum technologies, the generation and manipulation of single photons
has become a key element for applications such as quantum communication and quantum …

Since its discovery, quantum entanglement has challenged some of the best established
views of the world: locality and reality. Quantum technologies promise to revolutionize …

A thin-film periodically poled lithium niobate waveguide was designed and fabricated which
generates entangled photon pairs at telecommunications wavelengths with high …

Bell's 1964 theorem, which states that the predictions of quantum theory cannot be
accounted for by any local theory, represents one of the most profound developments in the …

We present a source of entangled photons that violates a Bell inequality free of the “fair-
sampling” assumption, by over 7 standard deviations. This violation is the first reported …

Quantum cryptography Page 1 Quantum cryptography Nicolas Gisin, Grégoire Ribordy,
Wolfgang Tittel, and Hugo Zbinden Group of Applied Physics, University of Geneva, 1211 …

All our former experience with application of quantum theory seems to say that what is
predicted by quantum formalism must occur in the laboratory. But the essence of quantum …

In quantum communication via noisy channels, the error probability scales exponentially
with the length of the channel. We present a scheme of a quantum repeater that overcomes …

Quantum communication, and indeed quantum information in general, has changed the way
we think about quantum physics. In 1984 and 1991, the first protocol for quantum …

The counter-intuitive aspects of quantum physics have been for long illustrated by thought
experiments, from Einstein's photon box to Schrödinger's cat. These experiments have now …