A criterion for testing multi-particle NPT entanglement
| dc.creator | Zeng, B. | |
| dc.creator | Zhou, D. L. | |
| dc.creator | Zhang, P. | |
| dc.creator | Xu, Z. | |
| dc.creator | You, L. | |
| dc.date | 2003-05-16 | |
| dc.date.accessioned | 2026-07-07T06:06:46Z | |
| dc.date.available | 2026-07-07T06:06:46Z | |
| dc.description | We revisit the criterion of multi-particle entanglement based on the overlaps of a given quantum state $ρ$ with maximally entangled states. For a system of $m$ particles, each with $N$ distinct states, we prove that $ρ$ is $m$-particle negative partial transpose (NPT) entangled, if there exists a maximally entangled state $|{\rm MES}>$, such that $<{\rm MES}|ρ|{\rm MES}>>{1}/{N}$. 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. | |
| dc.description | 4 pages | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0305091 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0305091 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/91095 | |
| dc.subject | Quantum Physics | |
| dc.title | A criterion for testing multi-particle NPT entanglement | |
| dc.type | text |