Quantum discord

In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes… (More)
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2015
2015
For any bipartite state, how strongly can one subsystem be quantum correlated with another? Using the Koashi–Winter relation, we… (More)
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2014
2014
We study the computational complexity of quantum discord (a measure of quantum correlation beyond entanglement), and prove that… (More)
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2014
2014
In this paper, we provide a simple relation for the conditional entropy as the difference of two Shannon entropies. This relation… (More)
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2013
2013
We define a new measure of quantum correlations in bipartite quantum systems given by the Bures distance of the system state to… (More)
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2011
2011
We present an operational interpretation of quantum discord based on the quantum state merging protocol. Quantum discord is the… (More)
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Highly Cited
2010
Highly Cited
2010
Quantum discord characterizes "nonclassicality" of correlations in quantum mechanics. It has been proposed as the key resource… (More)
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2010
2010
We extend the quantum discord to continuous variable systems and evaluate Gaussian quantum discord C(ϱ) for bipartite Gaussian… (More)
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Highly Cited
2010
Highly Cited
2010
Mazhar Ali,1,3,* A. R. P. Rau,2 and G. Alber1 1Institut für Angewandte Physik, Technische Universität Darmstadt, Darmstadt D… (More)
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2009
2009
We discuss the behavior of quantum and classical pairwise correlations in critical systems, with the quantumness of the… (More)
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2002
2002
  • MAXWELL’S DEMONS
  • 2002
Quantum discord was proposed as an information theoretic measure of the " quantumness " of correlations. I show that discord… (More)
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