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Quantum, classical and discord correlations

Vlatko Vedral ( Professor of Quantum Information Science at University of Oxford, Professor of Physics at National University of Singapore )
In my talk  I plan to review the notion of correlations in quantum mechanics. I will show that in addition to quantum (entanglement) and classical correlations there is another type of correlation usually termed "discord". What is more is that discord could lead to a greater than classical efficiency even when entanglement is absent. My talk will contain a number of worked out examples of simple two or many qubit states.



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