Quantum coherence and quantum correlations are of fundamental and practical significance
for the development of quantum mechanics. They are also cornerstones of quantum …

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 …

Dakic, Vedral, and Brukner [arxiv: 1004.0190 (2010)] introduced a geometric measure of
quantum discord and derived an explicit formula for any two-qubit state. This measure is …

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

We study the dynamics of quantum and classical correlations in the presence of
nondissipative decoherence. We discover a class of initial states for which the quantum …

We present a reliable algorithm to evaluate quantum discord for general two-qubit states,
amending and extending an approach recently put forward for the subclass of X states. A …

We present an operational interpretation of quantum discord based on the quantum state
merging protocol. Quantum discord is the markup in the cost of quantum communication in …

We address the validity of the single-mode approximation that is commonly invoked in the
analysis of entanglement in noninertial frames and in other relativistic quantum-information …

We investigate pairwise quantum correlation as measured by the quantum discord as well
as its classical counterpart in the thermodynamic limit of anisotropic XY spin-1/2 chains in a …

We analyze the entanglement degradation provoked by the Hawking effect in a bipartite
system Alice-Rob when Rob is in the proximities of a Schwarzschild black hole while Alice is …