Reference : Entanglement equivalence of N-qubit symmetric states
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/16799
Entanglement equivalence of N-qubit symmetric states
English
Mathonet, Pierre mailto [Université de Liège - ULg > Département de mathématique > Département de mathématique >]
Krins, Stéphanie mailto [Université de Liège - ULg > Département de physique > Physique des atomes froids >]
Godefroid, M. [ > > ]
Lamata, L. [ > > ]
Solano, E. [ > > ]
Bastin, Thierry mailto [Université de Liège - ULg > Département de physique > Physique des atomes froids >]
2010
Physical Review. A
American Physical Society
81
052315:1-5
Yes
International
1050-2947
College Park
MD
[en] We study the interconversion of multipartite symmetric N-qubit states under stochastic local operations and classical communication (SLOCC). We demonstrate that if two symmetric states can be connected with a nonsymmetric invertible local operation (ILO), then they belong necessarily to the separable, W, or Greenberger-Horne-Zeilinger (GHZ) entanglement class, establishing a practical method of discriminating subsets of entanglement classes. Furthermore, we prove that there always exists a symmetric ILO connecting any pair of symmetric N-qubit states equivalent under SLOCC, simplifying the requirements for experimental implementations of local interconversion of those states.
Researchers ; Professionals
http://hdl.handle.net/2268/16799

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