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Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 50: Quantum information: Concepts and methods III

Q 50.5: Vortrag

Donnerstag, 20. März 2014, 17:30–17:45, Kinosaal

Bell Inequality violations in entangled K-meson pairs — •Marius Paraschiv, Otfried Guehne, and Thomas Mannel — Universität Siegen, Department Physik, Emmy-Noether-Campus , Walter-Flex-Straße 3 , 57068 Siegen , Germany

The quantum mechanical violation of Bell inequalities has been thoroughly verified during the last thirty years through various ion and photon experiments. In this contribution I will present our work on the study of Bell inequality violations for pairs of entangled neutral K mesons. The important difference from the usual ion / photon cases is that K mesons decay, therefore all decay products must be included. By considering both strangeness and the combined CP operation, an analogy can be made with other, well known, two-level systems. Bell inequalities are treated both in terms of quasi spin measurements and different time measurements. A special type of inequality besides the standard CHSH inequality is the Sliwa-Collins-Gisin inequality. Besides being another example of Bell test, the investigation of entanglement in particle physics may have applications for entanglement-enhanced measurements.

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