A quantum internet is the holy grail of quantum information processing, enabling the
deployment of a broad range of quantum technologies and protocols on a global scale …

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 …

We report phase-programmable Gaussian boson sampling (GBS) which produces up to 113
photon detection events out of a 144-mode photonic circuit. A new high-brightness and …

Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to
real-world applications for communication and computation unavailable without the …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

We have measured the linear polarization correlation of the photons emitted in an atomic
cascade of calcium. It has been shown by a generalization of Bell's inequality that the …

After they have interacted, quantum particles generally behave as a single nonseparable
entangled system. The concept of entanglement plays an essential role in quantum physics …

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 …

The distribution of quantum states over long distances is limited by photon loss.
Straightforward amplification as in classical telecommunications is not an option in quantum …

We report new Gaussian boson sampling experiments with pseudo-photon-number-
resolving detection, which register up to 255 photon-click events. We consider partial photon …