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Entanglement Theory Quantum Correlations
Entangled multi-qubit states without higher-tangle
arXiv
Authors: Heng Fan, Yong-Cheng Ou, Vwani Roychowdhury
Year
2007
Paper ID
49704
Status
Preprint
Abstract Read
~2 min
Abstract Words
85
Citations
N/A
Abstract
We 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.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- We analyze mixed multi-qubit states composed of a W class state and a product state with all qubit in |0>.
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