A few decades ago, quantum optics stood out as a new domain of physics by exhibiting
states of light with no classical equivalent. The first investigations concerned single photons …

How can one prove that a given quantum state is entangled? In this paper we review
different methods that have been proposed for entanglement detection. We first explain the …

One of the most fundamental quantum states of light is the squeezed vacuum, in which noise
in one of the quadratures is less than the standard quantum noise limit. In nanophotonics, it …

Entanglement is the key resource for measurement-based quantum computing. It is stored in
quantum states known as cluster states, which are prepared offline and enable quantum …

Measurement-based quantum computation offers exponential computational speed-up
through simple measurements on a large entangled cluster state. We propose and …

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 …

Quantum computers promise ultrafast performance for certain tasks 1. Experimentally
appealing, measurement-based quantum computation 2 requires an entangled resource …

We report the experimental realization and characterization of one 60-mode copy and of two
30-mode copies of a dual-rail quantum-wire cluster state in the quantum optical frequency …

Highly entangled quantum networks (cluster states) lie at the heart of recent approaches to
quantum computing,. Yet the current approach for constructing optical quantum networks …

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