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Oxford Quantum Talks Archive

Quantum, classical and discord correlations

Vlatko Vedral, University of Oxford, University of Singapore
Seminars, November 2009, University of Oxford

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.

[video] [streaming video]