Comment on "Single-mode excited entangled coherent states"

Details Comment on "Single-mode excited entangled coherent states" Comment on "Single-mode excited entangled coherent states"

2009-05-06

arxiv.org/abs/0905.0799v1

Physics

Quantum Physics

4 apges, 2 figures, submitted to JPA 15 April 2009

Scientific paper

In Xu and Kuang (\textit{J. Phys. A: Math. Gen.} 39 (2006) L191), the authors
claim that, for single-mode excited entangled coherent states $|
\Psi_{\pm}(\alpha,m)>$, \textquotedblleft the photon excitations lead to the
decrease of the concurrence in the strong field regime of $| \alpha | ^{2}$ and
the concurrence tends to zero when $| \alpha | ^{2}\to \infty$". This is wrong.

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