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 …

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 propose a global measure for quantum correlations in multipartite systems, which is
obtained by suitably recasting the quantum discord in terms of relative entropy and local von …

Quantum discord provides a measure for quantifying quantum correlations beyond
entanglement and is very hard to compute even for two-qubit states because of the …

We explore the local quantum coherence and the local quantum uncertainty, based on
Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in …

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 …

We propose to use the steered quantum coherence (SQC) as a signature of quantum phase
transitions (QPTs). By considering various spin chain models, including the transverse-field …

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