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 …

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 …

Quantum mechanics predicts that measurements of incompatible observables carry a
minimum uncertainty which is independent of technical deficiencies of the measurement …

Quantum metrology exploits quantum mechanical laws to improve the precision in
estimating technologically relevant parameters such as phase, frequency, or magnetic fields …

A major signature of quantum mechanics beyond classical physics is coherence, the
existence of superposition states. The recently developed resource theory of quantum …

It has recently been pointed out that the geometric quantum discord, as defined by the
Hilbert-Schmidt norm (2-norm), is not a good measure of quantum correlations, since it may …

Quantum discord is the minimal bipartite resource which is needed for a secure quantum
key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role …

Core quantum postulates including the superposition principle and the unitarity of evolutions
are natural and strikingly simple. I show that—when supplemented with a limited version of …

We show that the phenomenon of frozen discord, exhibited by specific classes of two-qubit
states under local nondissipative decoherent evolutions, is a common feature of all known …

Quantum reservoir networks combine the intelligence of neural networks with the potential of
quantum computing in a single platform. This platform operates on the architecture of …