One of the best signatures of nonclassicality in a quantum system is the existence of
correlations that have no classical counterpart. Different methods for quantifying the …

Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

Quantum discord characterizes “nonclassicality” of correlations in quantum mechanics. It
has been proposed as the key resource present in certain quantum communication tasks …

Quantum computers are unnecessary for exponentially efficient computation or simulation if
the Extended Church-Turing thesis is correct. The thesis would be strongly contradicted by …

Quantum discord, a kind of quantum correlation, is defined as the difference between
quantum mutual information and classical correlation in a bipartite system. In general, this …

We discuss the problem of the separation of total correlations in a given quantum state into
entanglement, dissonance, and classical correlations using the concept of relative entropy …

Top quarks have been recently shown to be a promising system to study quantum
information at the highest-energy scale available. The current lines of research mostly …

The existence of better-than-classical quantum information processing (QIP) models which
consume very little or no entanglement suggests that separable or weakly entangled states …

Quantum discord quantifies nonclassical correlations in a quantum system including those
not captured by entanglement. Thus, only states with zero discord exhibit strictly classical …

Quantum discord, a measure of genuinely quantum correlations, is generalized to
continuous variable systems. For all two-mode Gaussian states, we calculate analytically the …