Stuttgart 2012 – wissenschaftliches Programm
Q 35.41: Poster
Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II
Lower Bounds on a Genuine Multipartite Entanglement Measure — •Junyi Wu1, Marcus Huber2, Hermann Kampermann1, and Dagmar Bruss1 — 1Institute for Theoretical Physics III, Heinrich-Heine-University Düsseldorf, Germany — 2Faculty of Physics, University of Vienna
In  a genuine multipartite entanglement measure based on the definition of concurrence was introduced. A lower bound of this measure was calculated via a relation to a nonlinear entanglement witness . This bound depends therefore on the type of state that one considers. By using the witnesses introduced in , we provide new lower bounds and extend the approach of  to a wide range of states (in particular, Dicke states).
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