The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising 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 …

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 …

A short review of recent developments of the Dicke model in quantum optics is presented.
The focus is on the model in a cavity at zero temperature and in the rotating wave …

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 …

Abstract 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 …

We compute the quantum correlation [quantum discord (QD)] and the entanglement (EOF)
between nearest-neighbor qubits (spin-1/2) in an infinite chain described by the Heisenberg …

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 …

It is well known that many operations in quantum information processing depend largely on
a special kind of quantum correlation, that is, entanglement. However, there are also …

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 …