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论文类型：期刊论文

发表时间：2004-09-27

发表刊物：PHYSICS LETTERS A

收录刊物：SCIE

卷号：330

期号：5

页面范围：377-383

ISSN号：0375-9601

关键字：entanglement measure; multiparticle entanglement; free entanglement

摘要：In this Letter, based on the classification of multiparticle states and the original definition of semiseparability, we give out the redefinition of semiseparability and inseparability of multiparticle states. By virtue of the redefinition, entanglement measure of multiparticle states can be converted into bipartite entanglement measure in arbitrary dimension in mathematical method. A simple expression of entanglement measure is given out. As examples, a general three-particle pure state and an N-particle mixed state are considered. (C) 2004 Elsevier B.V. All rights reserved.