Abstract
We derive -particle Bell-type inequalities under the assumption of partial separability, i.e., that the -particle system is composed of subsystems which may be correlated in any way (e.g., entangled) but which are uncorrelated with respect to each other. These inequalities provide, upon violation, experimentally accessible sufficient conditions for full -particle entanglement, i.e., for -particle entanglement that cannot be reduced to mixtures of states in which a smaller number of particles are entangled. The inequalities are shown to be maximally violated by the -particle Greenberger-Horne-Zeilinger states.
- Received 9 January 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.060401
©2002 American Physical Society