Entanglement in the bimodal Jaynes-Cummings model with the two-mode squeezed vacuum state

Details Entanglement in the bimodal Jaynes-Cummings model with the two-mode squeezed vacuum state Entanglement in the bimodal Jaynes-Cummings model with the two-mode squeezed vacuum state

2007-03-06

arxiv.org/abs/quant-ph/0703043v1

Physics

Quantum Physics

12 pages, 4 figures

Scientific paper

10.1007/s10773-007-9549-1

In this paper, we study the interaction between the two-level atom and a bimodal cavity field, namely, two-mode Jaynes-Cummings model when the atom and the modes are initially in the atomic superposition state and two-mode squeezed vacuum state, respectively. For this system we investigate the atomic inversion, linear entropy and atomic Wehrl entropy. We show that there is a connection between all these quantities. Also we prove that the atomic Wehrl entropy exhibits behaviors similar to those of the linear entropy and the von Neumann entropy. Moreover, we show that the bipartite exhibits periodical disentanglement and derive the explicit forms of the states of the atom and the modes at these values of the interaction times.

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