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 information theory has considerably helped in the understanding of quantum many-
body systems. The role of quantum correlations and in particular, bipartite entanglement …

We explore quantum and classical correlations along with coherence in the ground states of
spin-1 Heisenberg chains, namely the one-dimensional XXZ model and the one …

Taking partial traces (PTrs) for computing reduced density matrices, or related functions, is a
ubiquitous procedure in the quantum mechanics of composite systems. In this paper, we …

Quantum discord, a kind of quantum correlation based on entropic measures, is defined as
the difference between quantum mutual information and classical correlation in a bipartite …

The symmetry SU (2) and its geometric Bloch Sphere rendering have been successfully
applied to the study of a single qubit (spin-1/2); however, the extension of such symmetries …

Quantum correlations are at the core of quantum mechanics and play a crucial role in
various fields. While bipartite quantum correlations have been extensively studied …

We study the behaviors of spin nonclassicality in critical systems of spin chains, with the spin
nonclassicality measured by an informational quantifier based on the Wigner-Yanase skew …

We apply the Wigner function formalism from quantum optics via two approaches, Wootters'
discrete Wigner function and the generalized Wigner function, to detect quantum phase …