A criterion for testing multi-particle NPT entanglement

Details A criterion for testing multi-particle NPT entanglement A criterion for testing multi-particle NPT entanglement

2003-05-16

arxiv.org/abs/quant-ph/0305091v1

Physics

Quantum Physics

4 pages

Scientific paper

We revisit the criterion of multi-particle entanglement based on the overlaps of a given quantum state $\rho$ with maximally entangled states. For a system of $m$ particles, each with $N$ distinct states, we prove that $\rho$ is $m$-particle negative partial transpose (NPT) entangled, if there exists a maximally entangled state $|{\rm MES}>$, such that $<{\rm MES}|\rho|{\rm MES}>>{1}/{N}$. While this sufficiency condition is weaker than the Peres-Horodecki criterion in all cases, it applies to multi-particle systems, and becomes especially useful when the number of particles ($m$) is large. We also consider the converse of this criterion and illustrate its invalidity with counter examples.

Affiliated with

Also associated with

No associations

Rating

A criterion for testing multi-particle NPT entanglement 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 A criterion for testing multi-particle NPT entanglement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A criterion for testing multi-particle NPT entanglement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-545666