517 citations · 1.5k across the 12 of their papers we have counts for
5 papers · 1 filter
Long-range quantum discord in critical spin systems
J. Maziero, L. C. Céleri, R. M. Serra +1
We show that quantum correlations as quantified by quantum discord can characterize quantum phase transitions by exhibiting nontrivial long-range decay as a function of distance in…
Classicality witness for two-qubit states
J. Maziero, R. M. Serra
In the last few years one realized that if the state of a bipartite system can be written as , where and $\{…
Symmetry aspects of quantum discord
J. Maziero, L. C. Celeri, R. M. Serra
Quantum discord (QD) reveals the nonclassical nature of correlations in bipartite quantum states, going beyond the entanglement-separability paradigm. In this article we discuss th…
Nonclassical correlation in NMR quadrupolar systems
D. O. Soares-Pinto, L. C. Celeri, R. Auccaise +5
The existence of quantum correlation (as revealed by quantum discord), other than entanglement and its role in quantum-information processing (QIP), is a current subject for discus…
Quantum and classical thermal correlations in the XY spin-1/2 chain
J. Maziero, H. C. Guzman, L. C. Celeri +2
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…