期刊
NEW JOURNAL OF PHYSICS
卷 20, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aac3be
关键词
entanglement restriction; entanglement sharing; multiparty entanglement
资金
- National Science Foundation [PHY-1068325, PHY-1203931, PHY-1505189, PHY-1507278, INSPIRE PHY-1539859]
- Excellence Initiative of Aix-Marseille University - A*MIDEX, a French 'Investissements d'Avenir' programme
- Direct For Mathematical & Physical Scien
- Division Of Physics [1505189, 1539859, 1507278] Funding Source: National Science Foundation
We prove a set of tight entanglement inequalities for arbitrary N-qubit pure states. By focusing on all bi-partite marginal entanglements between each single qubit and its remaining partners, we show that the inequalities provide an upper bound for each marginal entanglement, while the known monogamy relation establishes the lower bound. The restrictions and sharing properties associated with the inequalities are further analyzed with a geometric polytope approach, and examples of three-qubit GHZ-class and W-class entangled states are presented to illustrate the results.
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