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. ©2005 The American Physical Society.
CITATION STYLE
Doherty, A. C., Parrilo, P. A., & Spedalieri, F. M. (2005). Detecting multipartite entanglement. Physical Review A - Atomic, Molecular, and Optical Physics, 71(3). https://doi.org/10.1103/PhysRevA.71.032333
Mendeley helps you to discover research relevant for your work.