We review concepts and methods associated with quantum discord and related topics. We
also describe their possible connections with other aspects of quantum information and …

The quantum internet is a cutting‐edge paradigm that uses the unique characteristics of
quantum technology to radically alter communication networks. This new network type is …

Quantum information theory is built upon the realisation that quantum resources like
coherence and entanglement can be exploited for novel or enhanced ways of transmitting …

Using Venn diagrams, we classify the different types of two-mode Gaussian continuous
variable quantum correlation including directional entanglement and Einstein-Podolsky …

As two valuable quantum resources, Einstein-Podolsky-Rosen entanglement and steering
play important roles in quantum-enhanced communication protocols. Distributing such …

Quantum correlations in a composite system can be measured by resorting to a geometric
approach, according to which the distance from the state of the system to a suitable set of …

Quantum entanglement is a form of correlation between quantum particles that cannot be
increased via local operations and classical communication. It has therefore been proposed …

Quantum network enables quantum communication among quantum nodes and provides
advantages that are unavailable in any classical network. Based on rapidly developing …

We provide an argument to infer stationary entanglement between light and a mechanical
oscillator based on continuous measurement of light only. We propose an experimentally …

In this review we discuss intriguing properties of apparently classical optical fields, that go
beyond purely classical context and allow us to speak about quantum characteristics of such …