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Q: Fachverband Quantenoptik und Photonik

Q 50: Quantum information: Concepts and methods III

Q 50.1: Vortrag

Donnerstag, 20. März 2014, 16:30–16:45, Kinosaal

Designing Bell Inequalities from a Tsirelson Bound — •Michael Epping, Hermann Kampermann, and Dagmar Bruß — Institut für Theoretische Physik III, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf

In analogy to the local hidden variable bounds of Bell inequalities, Tsirelson bounds restrict their value predicted by quantum theory. We derive simple Tsirelson bounds for general CHSH type inequalities based on the maximal singular value of the matrix of coefficients, analyze its tightness and give several applications. In particular our method allows to optimize Bell inequalities by applying operations that do not affect the Tsirelson bound and the optimal observables.