Entanglement measure for pure M circle times N bipartite quantum states
2005 (English)In: Optics and Spectroscopy, ISSN 0030-400X, E-ISSN 1562-6911, Vol. 99, no 3, 379-385 p.Article in journal (Refereed) Published
We propose an entanglement measure for pure M circle times N bipartite quantum states. We obtain the measure by generalizing the equivalent measure for a 2 circle times 2 system, via a 2 circle times 3 system, to the general bipartite case. The measure emphasizes the role Bell states have, both for forming the measure and for experimentally measuring the entanglement. The form of the measure is similar to the generalized concurrence. In the case of 2 circle times 3 systems, we prove that our measure, which is directly measurable, equals the concurrence. It is also shown that, in order to measure the entanglement, it is sufficient to measure the projections of the state onto a maximum of M(M-1)N(N-1)/2 Bell states.
Place, publisher, year, edition, pages
2005. Vol. 99, no 3, 379-385 p.
Other Engineering and Technologies
IdentifiersURN: urn:nbn:se:kth:diva-15110DOI: 10.1134/1.2055931ISI: 000232544400006ScopusID: 2-s2.0-27944445423OAI: oai:DiVA.org:kth-15110DiVA: diva2:333151
QC 201005252010-08-052010-08-052014-12-01Bibliographically approved