首页|Some Tighter Monogamy Inequalities in N-Qubit Systems
Some Tighter Monogamy Inequalities in N-Qubit Systems
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We construct a piecewise function to investigate some monogamy inequalities in terms of the αth power of concurrence and negativity(α ≥ 2),entanglement of formation(α≥√2),and Tsallis-q entanglement(α≥1).These inequalities are tighter than the existing results with detailed examples.Particularly,it is worth highlighting some classes of quantum states which can saturate these monogamy inequalities for α=2,4 and 6 in terms of concurrence and negativity and for α=1,2 and 3 in terms of Tsallis-q entanglement.
Monogamy inequalitiesEntanglement measuresN-qubit systems
ZHANG Lu-lu、YANG Yan-min、CHEN Wei
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Faculty of Science,Kunming University of Science and Technology,Kunming 650500,China
Research Center for Mathematics and Interdisciplinary Science and Technology,Kunming 650500,China
School of Computer Science and Technology,Dongguan University of Technology,Dongguan 523808,China
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