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arXiv quant-ph/0601177quant-ph
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两个具有硬核排斥的粒子通过散射产生纠缠

Entanglement generation via scattering of two particles with hard-core repulsion

Frank Schmüser, Dominik Janzing

摘要:

我们分析了一维散射过程中纠缠的产生。两个碰撞粒子具有高斯波函数,通过硬核排斥相互作用,我们的分析中使用了双模高斯态纠缠的结果。产生的纠缠以一种不明显的方式依赖于质量和初始宽度的参数比。两个粒子的渐近波函数及其相关的椭圆产生额外的几何洞察这些条件。讨论了压缩光分束器产生的纠缠量与定量分析的差异。

英文摘要:

We analyse the entanglement generation in a one dimensional scattering process. The two colliding particles have a Gaussian wave function and interact by hard--core repulsion.In our analysis results on the entanglement of two mode Gaussian states are used. The produced entanglement depends in a non-obvious way on the parameters ratio of masses and initial widths. The asymptotic wavefunction of the two particles and its associated ellipse yield additional geometric insight into these conditions. The difference to the quantitative analysis of the amount of entanglement generated by beam splitters with squeezed light is discussed.

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