Detecting multipartite entanglement

Doherty, Andrew C., Parrilo, Pablo A. and Spedalieri, Federico M. (2005) Detecting multipartite entanglement. Physical Review A - Atomic, Molecular, and Optical Physics, 71 3: 1-9. doi:10.1103/PhysRevA.71.032333

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Author Doherty, Andrew C.
Parrilo, Pablo A.
Spedalieri, Federico M.
Title Detecting multipartite entanglement
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
Publication date 2005-03
Sub-type Article (original research)
DOI 10.1103/PhysRevA.71.032333
Open Access Status File (Publisher version)
Volume 71
Issue 3
Start page 1
End page 9
Total pages 9
Editor B. Crasemann
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2005
Language eng
Subject 240301 Atomic and Molecular Physics
780102 Physical sciences
Abstract We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability that is based on finding state extensions with appropriate properties and may be implemented as a semidefinite program. The main result of this work is to show that there is a series of tests of this kind such that if a multiparty state is entangled this will eventually be detected by one of the tests. The procedure also provides a means of constructing entanglement witnesses that could in principle be measured in order to demonstrate that the state is entangled.
Keyword Physics, Atomic, Molecular & Chemical
State Extension Problem
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

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Created: Wed, 15 Aug 2007, 06:12:15 EST