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Phys. Rev. A 80, 034301 (2009) [4 pages]

Bound of entanglement of assistance and monogamy constraints

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Zong-Guo Li1, Shao-Ming Fei2,3, Sergio Albeverio3, 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

Received 17 April 2009; published 25 September 2009

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

URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.034301
DOI:
10.1103/PhysRevA.80.034301
PACS:
03.67.Mn, 03.65.Ud, 03.67.Bg, 03.65.Ta
 
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