Entanglement via Barut-Girardello coherent state for su(q) (1,1) quantum algebra: bipartite composite system

摘要

Using noncocommutative coproduct properties of the quantum algebras, we introduce and obtain, in a bipartite composite system, the Barut-Girardello coherent state for the q-deformed su(q)(1, 1) algebra. The quantum coproduct structure ensures this normalizable coherent state to be entangled. The entanglement disappears in the classical q --> 1 limit, giving rise to a factorizable state. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 19]