Comment on "Single-mode excited entangled coherent states"

Abstract

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.

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

References in corpus (2)

• Universal state inversion and concurrence in arbitrary dimensions
• Bipartite maximally entangled nonorthorgonal states