General Monogamy Inequality for Bipartite Qubit Entanglement

Tobias J. Osborne and Frank Verstraete
Phys. Rev. Lett. 96, 220503 – Published 7 June 2006

Abstract

We consider multipartite states of qubits and prove that their bipartite quantum entanglement, as quantified by the concurrence, satisfies a monogamy inequality conjectured by Coffman, Kundu, and Wootters. We relate this monogamy inequality to the concept of frustration of correlations in quantum spin systems.

  • Received 19 April 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.220503

©2006 American Physical Society

Authors & Affiliations

Tobias J. Osborne1,* and Frank Verstraete2,†

  • 1Department of Mathematics, University of Bristol, University Walk, Bristol BS8 1TW, United Kingdom
  • 2Institute for Quantum Information, California Institute of Technology, Pasadena, California 91125, USA

  • *Electronic address: T.J.Osborne@bristol.ac.uk
  • Electronic address: fverstraete@ist.caltech.edu

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Issue

Vol. 96, Iss. 22 — 9 June 2006

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