Entangled multi-qubit states without higher-tangle

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dc.creatorFan, Heng
dc.creatorOu, Yong-Cheng
dc.creatorRoychowdhury, Vwani
dc.date2007-07-11
dc.date.accessioned2026-07-07T08:15:05Z
dc.date.available2026-07-07T08:15:05Z
dc.descriptionWe analyze mixed multi-qubit states composed of a W class state and a product state with all qubit in |0>. We find the optimal pure state decomposition and convex roofs for higher-tangle with bipartite partition between one qubit and the rest qubits for those mixed states. The optimality of the decomposition is ensured by the Coffman-Kundu-Wootters (CKW) inequality which describes the monogamy of quantum entanglement. The generalized monogamy inequality is found to be true for W class states with arbitrary partitions between one qubit and multi-qubit.
dc.description4 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0707.1578
dc.identifierhttp://arxiv.org/abs/0707.1578
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/133346
dc.subjectQuantum Physics
dc.titleEntangled multi-qubit states without higher-tangle
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