The influence of pump depletion on multipartite continuous-variable entanglement in a frequency non-degenerate parametric amplifier
Chao Zhao, W.H. Tan · Journal of Modern Optics · 2011
The multipartite continuous variable (CV) entanglement characteristic of a frequency non-degenerate optical parametric amplification (FNOPA) system was investigated for the case when pump depletion is considered. The multipartite CV entanglement depends on the pump parameter, μ, the squeezed parameter, r, and particle number, N. Larger values of pump parameter μ and particle number N result in a very small variance, , and a long-term entanglement.