Quantum cryptography exploits principles of quantum physics for the secure processing of
information. A prominent example is secure communication, ie, the task of transmitting …

In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

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 …

Long-distance entanglement distribution is essential for both foundational tests of quantum
physics and scalable quantum networks. Owing to channel loss, however, the previously …

Entangled-photon sources with simultaneously near-unity heralding efficiency and
indistinguishability are the fundamental elements for scalable photonic quantum …

Quantum entanglement has emerged as a great resource for spectroscopy and its
importance in two-photon spectrum and microscopy has been demonstrated. Current …

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 …

Random numbers are a fundamental resource in science and engineering with important
applications in simulation and cryptography. The inherent randomness at the core of …

Gaussian states have played an important role in the physics of continuous-variable
quantum systems. They are appealing for the experimental ease with which they can be …