Entanglement and permutational symmetry

Abstract

We study the separability of permutationally symmetric quantum states. We show that for bipartite symmetric systems most of the relevant entanglement criteria coincide. However, we provide a method to generate examples of bound entangled states in symmetric systems, for the bipartite and the multipartite case. These states shed some new light on the nature of bound entanglement.

5 pages, no figures, revtex4; v3: published version

References in corpus (3)

• Entanglement detection
• A complete family of separability criteria
• Detecting multipartite entanglement

Cited by in corpus (2)

• The geometric measure of entanglement for symmetric states
• Effect of Phase Factor in the Geometric Entanglement Measure of Three-Qubit States