Strong monogamy inequalities for four qubits

Regula, Bartosz and Osterloh, Andreas and Adesso, Gerardo (2016) Strong monogamy inequalities for four qubits. Physical Review A, 93 (5). 052338/1-052338/6. ISSN 2469-9926

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Abstract

We investigate possible generalizations of the Coffman-Kundu-Wootters monogamy inequality to four qubits, accounting for multipartite entanglement in addition to the bipartite terms. We show that the most natural extension of the inequality does not hold in general, and we describe the violations of this inequality in detail. We investigate alternative ways to extend the monogamy inequality to express a constraint on entanglement sharing valid for all four-qubit states, and perform an extensive numerical analysis of randomly generated four-qubit states to explore the properties of such extensions.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1103/PhysRevA.93.052338
Depositing User: Eprints, Support
Date Deposited: 31 Aug 2017 10:45
Last Modified: 31 Aug 2017 10:49
URI: http://eprints.nottingham.ac.uk/id/eprint/45297

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