Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations

Details Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations

2010-06-08

arxiv.org/abs/1006.1594v1

Phys. Rev. A, 82 032306 (2010)

Physics

Quantum Physics

10 pages, 3 figures

Scientific paper

10.1103/PhysRevA.82.032306

We present a criterion for multiparticle entanglement based on covariance matrices. On the one hand, the criterion allows to detect bound entangled states which are not detected by other criteria; on the other hand, some strongly entangled pure states such as the GHZ states are not detected. We show, however, that this is a general phenomenon: No separability criterion based on two-particle correlations can recognize the entanglement in the family of graph states, to which the GHZ states belong.

Affiliated with

Also associated with

No associations

Rating

Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-30570