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 …

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 …

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 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 …

Nonclassical correlations play a crucial role in the development of quantum information
science. The recent discovery that nonclassical correlations can be present even in …

Quantum discord is a measure of quantum correlation beyond entanglement. Computing
quantum discord for simple quantum states is a basic problem. An analytical formula of …

We investigate the performance of quantum Fisher information (QFI) under the Unruh-
Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect …

Correlations are a very important tool in the study of multipartite systems, for both classical
and quantum ones. The discussion about the quantum nature of correlations permeates …

We study the dynamics of classical correlation and quantum discord of two coupled two-
level atoms interacting with a cavity initially in vacuum, coherent and thermal equilibrium …