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Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 49: Quanteninformation: Konzepte und Methoden 5

Q 49.6: Vortrag

Donnerstag, 15. März 2012, 15:15–15:30, V7.01

Quantifying entanglement via static structure factors — •Hermann Kampermann1, Marcus Cramer2, Fabian Wolf1, Oliver Marty2, Alexander Streltsov1, Martin Plenio2, and Dagmar Bruß11Institut für theoretische Physik III, Universität Düsseldorf, Germany — 2Institut für theoretische Physik, Universität Ulm, Germany

The static structure factor is a global and accessible observable in experimental setups like e.g. in neutron scattering. Recently it was shown how to use such structure factors as entanglement witnesses and entanglement monotones [1,2]. We generalize these concepts to structure factors with arbitrary spin, and compare different types of witnesses as well as entanglement monotones.

[1] P. Krammer et al., Phys. Rev. Lett. 103, 100502 (2009)

[2] M. Cramer et al., Phys. Rev. Lett. 106, 020401 (2011)

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