The classical-quantum boundary for correlations:<? format?> Discord and related measures

K Modi, A Brodutch, H Cable, T Paterek, V Vedral - Reviews of Modern Physics, 2012 - APS
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 …

Quantum discord and its allies: a review of recent progress

A Bera, T Das, D Sadhukhan, SS Roy… - Reports on Progress …, 2017 - iopscience.iop.org
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 …

Measures and applications of quantum correlations

G Adesso, TR Bromley… - Journal of Physics A …, 2016 - iopscience.iop.org
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 coherence and uncertainty in the anisotropic XY chain

G Karpat, B Çakmak, FF Fanchini - Physical Review B, 2014 - APS
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 …

Quantum discord for two-qubit states: Analytical formula with very small worst-case error

Y Huang - Physical Review A—Atomic, Molecular, and Optical …, 2013 - APS
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 …

Thermal quantum and classical correlations and entanglement in the spin model with three-spin interaction

YC Li, HQ Lin - Physical Review A—Atomic, Molecular, and Optical …, 2011 - APS
Pairwise quantum discord (QD) and classical correlation (CC) are studied in the XY spin
chain with three-spin interaction. We analyze their capability in detecting quantum phase …

Quantum and classical correlations in the one-dimensional model with Dzyaloshinskii-Moriya interaction

BQ Liu, B Shao, JG Li, J Zou, LA Wu - Physical Review A—Atomic, Molecular …, 2011 - APS
We study the effect of Dzyaloshinskii-Moriya (DM) interaction on pairwise quantum discord,
entanglement, and classical correlation in the anisotropic XY spin-half chain. Analytical …

Theoretical and experimental aspects of quantum discord and related measures

LC Céleri, J Maziero, RM Serra - International Journal of Quantum …, 2011 - World Scientific
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 …

Factorization and criticality in the anisotropic XY chain via correlations

B Çakmak, G Karpat, FF Fanchini - Entropy, 2015 - mdpi.com
In this review, we discuss the zero and finite temperature behavior of various bipartite
quantum and total correlation measures, the skew information-based quantum coherence …

Criticality, factorization, and long-range correlations in the anisotropic model

S Campbell, J Richens, NL Gullo, T Busch - Physical Review A—Atomic …, 2013 - APS
We study the long-range quantum correlations in the anisotropic XY model. By first
examining the thermodynamic limit, we show that employing the quantum discord as a figure …