Effect of the dispersion on multipartite continuous-variable entanglement in optical param

Effect of the dispersion on multipartite continuous-variable entanglement in optical

parametric amplifier

赵超樱

【期刊名称】《中国物理：英文版》 【年(卷),期】2015(000)004

【摘要】Based on the quantum fluctuations, we adopt the method of generalized V1 criterion to investigate multipartite entan-glement characteristics in an optical parametric amplification system with the consideration of dispersion. The nonlinear interaction becomes strong because of the existence of dispersion coefficientσ. Considering the influence of dispersion factorσ, with increasing the pump parameter μ , the value of minimum variance V1 decreases and the squeezing curve nearly equals 1/(1+μ ). The larger particle number N results in a smaller variance and higher entanglement. 【总页数】4页(1-4) 【关键词】 【作者】赵超樱 【作者单位】 【正文语种】英文 【中图分类】 【相关文献】

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