Entanglement witnesses and geometry of entanglement of two-qutrit states

Autor(en)

Reinhold Bertlmann, Philipp Krammer

Abstrakt

We construct entanglement witnesses with regard to the geometric structure of the Hilbert–Schmidt space and investigate the geometry of entanglement. In particular, for a two-parameter family of two-qutrit states that are part of the magic simplex, we calculate the Hilbert–Schmidt measure of entanglement. We present a method to detect bound entanglement which is illustrated for a three-parameter family of states. In this way, we discover new regions of bound entangled states. Furthermore, we outline how to use our method to distinguish entangled from separable states.

Organisation(en)

Teilchenphysik

Journal

Annals of Physics

Band

324

Seiten

1388-1407

Anzahl der Seiten

20

ISSN

0003-4916

DOI

https://doi.org/10.1016/j.aop.2009.01.008

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/entanglement-witnesses-and-geometry-of-entanglement-of-twoqutrit-states(d69d66e0-c454-45f2-9911-c7f760e02052).html