Multipartite entanglement measures for all discrete systems

Autor(en)

Beatrix Hiesmayr, Marcus Huber

Abstrakt

Via a multidimensional complementarity relation we derive an operational entanglement measure for any discrete quantum system, i.e., for any multidimensional and multipartite system. This measure admits a separation into different classes of entanglement obtained by using a flip operator 2,3,...,n times, defining a m-flip concurrence. This operator sum has the practical feature to allow one to calculate for mixed states bounds on this m-flip concurrence. Moreover, the information content of an n-partite multidimensional system admits a simple and intuitive interpretation in terms of single particle obtainable information, entanglement, and information due to lack of classical knowledge of the quantum state under investigation. Explicitly, the three qubit system is analyzed and, e.g., the physical difference in entanglement of the W state, the Greenberger-Horne-Zeilinger (GHZ) state, or a biseparable state is revealed.

Organisation(en)

Teilchenphysik

Journal

Physical Review A

Band

78

Anzahl der Seiten

7

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.78.012342

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/multipartite-entanglement-measures-for-all-discrete-systems(e181d04f-052c-42e8-8474-3b2a461d7989).html