Structural change in multipartite entanglement sharing: A random matrix approach


Autoria(s): Gennaro, G.; Campbell, Steve; Paternostro, Mauro; Palma, Massimo
Data(s)

08/12/2009

Resumo

We study the typical entanglement properties of a system comprising two independent qubit environments interacting via a shuttling ancilla. The initial preparation of the environments is modeled using random matrix techniques. The entanglement measure used in our study is then averaged over many histories of randomly prepared environmental states. Under a Heisenberg interaction model, the average entanglement between the ancilla and one of the environments remains constant, regardless of the preparation of the latter and the details of the interaction. We also show that, upon suitable kinematic and dynamical changes in the ancillaenvironment subsystems, the entanglement-sharing structure undergoes abrupt modifications associated with a change in the multipartite entanglement class of the overall system's state. These results are invariant with respect to the randomized initial state of the environments.

Identificador

http://pure.qub.ac.uk/portal/en/publications/structural-change-in-multipartite-entanglement-sharing-a-random-matrix-approach(0d9683b9-412d-4088-922c-1359916ab8d5).html

http://dx.doi.org/10.1103/PhysRevA.80.062315

http://www.scopus.com/inward/record.url?scp=71849088974&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Gennaro , G , Campbell , S , Paternostro , M & Palma , M 2009 , ' Structural change in multipartite entanglement sharing: A random matrix approach ' Physical Review A , vol 80 , no. 6 , 062315 , pp. 062315-062325 . DOI: 10.1103/PhysRevA.80.062315

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100/3107 #Atomic and Molecular Physics, and Optics
Tipo

article