Concurrence for general multipartite states
نویسندگان
چکیده
منابع مشابه
Concurrence classes for general pure multipartite states
We propose concurrence classes for general pure multipartite states based on an orthogonal complement of a positive operator valued measure on quantum phase. In particular, we construct W m class, GHZ, and GHZ class concurrences for general pure m-partite states. We give explicit expressions for W 3 and GHZ class concurrences for general pure three-partite states and for W , GHZ, and GHZ class ...
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Ming Li, Shao-Ming Fei and Zhi-Xi Wang 1 Department of Mathematics, Capital Normal University, Beijing 100037 2 Institut für Angewandte Mathematik, Universität Bonn, D-53115 Abstract We study the concurrence of arbitrary multipartite mixed quantum states. An explicit lower bound of the concurrence is derived, which detects quantum entanglement of some states better than some separability criter...
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and General
سال: 2006
ISSN: 0305-4470,1361-6447
DOI: 10.1088/0305-4470/39/49/010