On Estimation of Fully Entangled Fraction

Ruijuan Gu, Ming Li, Shao-Ming Fei, and Xianqing Li-Jost

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Submission date: 25. Mar. 2009
Pages: 10
published in: Communications in theoretical physics, 53 (2010) 2, p. 265-268 
DOI number (of the published article): 10.1088/0253-6102/53/2/12
Bibtex
PACS-Numbers: 03.67.-a
Keywords and phrases: entanglement, Fidelity, Teleportation
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Abstract:
We study the fully entangled fraction (FEF) of arbitrary mixed states. New upper bounds of FEF are derived. These upper bounds make complements on the estimation of the value of FEF. For weakly mixed quantum states, an upper bound is shown to be very tight to the exact value of FEF.