Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 56: Quantum Information: Quantum Communication II

Q 56.7: Talk

Friday, March 12, 2010, 12:00–12:15, A 310

Extremal quantum correlations and cryptographic security — •Torsten Franz, Fabian Furrer, David Gross, Jukka Kiukas, Volkher Scholz, and Reinhard Werner — Institut für Theoretische Physik, Leibniz Universität Hannover

Results of quantum experiments are given by correlation tables, i.e. expectation values of joint measurements performed at different locations. We are interested in situations when these correlations are provably secure, i.e. when the measured results can be shown to be independent of any eavesdropper. We show that any extremal quantum correlation table is secure, and provide algebraic criteria for this.