The scattering of two-mode squeezed vacuum state and entangled coherent state through a one-dimensional potential barrier
The scattering of two-mode squeezed vacuum state and entangled coherent state through a one-dimensional potential barrier
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二模压缩真空态和纠缠相干态通过一维势垒的散射
DOI：
10.7498/aps.59.80
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发表时间：
2010-01
期刊：
影响因子：
--
通讯作者：
Xia Yun-Jie
中科院分区：
文献类型：
--
作者：
Chen Xing;Xia Yun-Jie
分析了双模压缩真空态和纠缠相干态的一维势垒散射问题。结果表明，两个散射态的纠缠与势垒的传输系数呈抛物线关系，抛物线的谷值对应于半反半透势垒。另外，前者的纠缠度与入射压缩因子呈抛物线关系，后者的纠缠度与入射纠缠度呈线性关系。两种散射态的保真度均随传输系数的增大而增大，但前者随入射压缩因子的增大而减小，后者随相干态的入射模数的增大而减小。
We analyze the one-dimensional potential barrier scattering problem of two-mode squeezed vacuum state and entangled coherent state. We show that the entanglement of both the scattering states exhibits a parabolic relation with the transmission coefficient of the barrier, and valley of the parabola corresponds with a semi-anti-semi-permeable barrier. In addition, the entanglement of the former has a similar parabolic relation with the incident squeezed factor, and the entanglement of the latter has a linear relation with the incident entanglement. The fidelities of both the scattering states increase as the transmission coefficient increases, but the former decreases as the incident squeezed factor increases and the latter decreases as the incident module of coherent state increases.