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A simple entanglement measure for multipartite pure states

arXiv:quant-ph/0405133 · doi:10.1023/B:IJTP.0000048612.08077.8e

Abstract

A simple entanglement measure for multipartite pure states is formulated based on the partial entropy of a series of reduced density matrices. Use of the proposed new measure to distinguish disentangled, partially entangled, and maximally entangled multipartite pure states is illustrated.

8 pages LaTeX