Coherent states and global entanglement in an N qubit system

Piroska Dömötör, Mihály G. Benedict

Research output: Article

10 Citations (Scopus)


We consider an N qubit system and show that in the symmetric subspace, S, a pure state is not globally entangled, iff it is a coherent state. It is also proven that in the orthogonal complement S all states are globally entangled.

Original languageEnglish
Pages (from-to)3792-3795
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number21
Publication statusPublished - máj. 19 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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