-A A +A
Type: 
Journal
Description: 
Most quantum system with short-ranged interactions show a fast decay of entanglement with the distance. In this Letter, we focus on the peculiarity of some systems to distribute entanglement between distant parties. Even in realistic models, like the spin-1 Heisenberg chain, sizable entanglement is present between arbitrarily distant particles. We show that long-distance entanglement appears for values of the microscopic parameters which do not coincide with known quantum critical points, hence signaling a transition detected only by genuine quantum correlations.
Publisher: 
American Physical Society
Publication date: 
23 Jun 2006
Authors: 

L Campos Venuti, C Degli Esposti Boschi, Marco Roncaglia

Biblio References: 
Volume: 96 Issue: 24 Pages: 247206
Origin: 
Physical review letters