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Bound of entanglement of assistance and monogamy constraints

Source: Phys. Rev. A 80, 034301 (2009); doi:10.1103/PhysRevA.80.034301

Published 25 September 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.67.Mn
    Entanglement measures, witnesses, and other characterizations (quantum information)
  • 03.65.Ud
    Entanglement and quantum nonlocality
  • 03.67.Bg
    Entanglement production and manipulation (quantum information)
  • 03.65.Ta
    Foundations of quantum mechanics; measurement theory
  • YEAR: 2009
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PUBLICATION DATA
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Zong-Guo Li,1 Shao-Ming Fei,2,3 Sergio Albeverio,3 and W. M. Liu1
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
2Department of Mathematics, Capital Normal University, Beijing 100037, China
3Institut für Angewandte Mathematik, Universität Bonn, Bonn 53115, Germany
We investigate the entanglement of assistance which quantifies capabilities of producing pure bipartite entangled states from a pure tripartite state. The lower bound and upper bound of entanglement of assistance are obtained. In the light of the upper bound, monogamy constraints are proved for arbitrary n-qubit states. ©2009 The American Physical Society
History: Received 17 April 2009; published 25 September 2009
Permalink: http://link.aps.org/abstract/PRA/v80/e034301

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