

Preprint 8/2012
Mixed Maximally Entangled States
Zong-Guo Li, Ming-Jing Zhao, Shao-Ming Fei, Heng Fan, and W.M. Liu
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Submission date: 25. Jan. 2012
published in: Quantum information and computation, 12 (2012) 1/2, p. 63-73
Bibtex
PACS-Numbers: 03.67.Mn, 03.67.Hk, 03.65.Ud, 03.65.Yz, 89.70.+c
Keywords and phrases: maximally entangled state, Entanglement Measure, quantum teleportation
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Abstract:
We find that the mixed maximally entangled states exist and prove that the form of the mixed maximally entangled states is unique in terms of the entanglement of
formation. Moreover, even if the entanglement is quantified by other
entanglement measures, this conclusion is still proven right. This result is a
supplementary to the generally accepted fact that all maximally
entangled states are pure. These states possess important properties
of the pure maximally entangled states, for example, these states
can be used as a resource for faithful teleportation and they can be
distinguished perfectly by local operations and classical
communication.