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Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 3: Quantum Information: Concepts and Methods I

Q 3.7: Talk

Monday, February 29, 2016, 12:30–12:45, e214

Uncertainty relations for angular momentum — •Lars Dammeier, René Schwonnek, and Reinhard F. Werner — Institut für Theoretische Physik, Leibniz Universität Hannover

In this talk we present various notions of uncertainty for angular momentum in the spin-s representation of SU(2). This is a natural example of how the concept of uncertainty applies to more than two non-commuting observables. For preparation uncertainty we present a method for computing the trade-off regions, and show results for various values of s. Concerning measurement uncertainty, we optimize a joint measurement of all three components such that the distribution of the projection of the output vector in any direction approximates the distribution of the corresponding angular momentum component.

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