Global entanglement and coherent states in an N-partite system

P. Dömötör, M. G. Benedict

Research output: Contribution to journalArticle

1 Citation (Scopus)


We consider a quantum system consisting of N parts, each of which is a "quKit" described by a K dimensional Hilbert space. We prove that in the symmetric subspace, S a pure state is not globally entangled, if and only if it is a coherent state. It is also shown that in the orthogonal complement S⊥ all states are globally entangled.

Original languageEnglish
Pages (from-to)237-242
Number of pages6
JournalEuropean Physical Journal D
Issue number2
Publication statusPublished - Jun 1 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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