9 research outputs found
Necessary conditions for classifying m-separability of multipartite entanglements
We study the norms of the Bloch vectors for arbitrary -partite quantum
states. A tight upper bound of the norms is derived for -partite systems
with different individual dimensions. These upper bounds are used to deal with
the separability problems. Necessary conditions are presented for -separable states in -partite quantum systems. Based on the upper bounds,
classification of multipartite entanglement is illustrated with detailed
examples.Comment: 14 page