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arXiv 0705.0047quant-ph
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自发下转换光子对与相干laser光干涉中的高光子数路径纠缠

High photon number path entanglement in the interference of spontaneously downconverted photon pairs with coherent laser light

Holger F. Hofmann, Takafumi Ono

摘要:

我们表明,下转换光子对和相干激光光子之间的量子干涉可以产生一个最大路径纠缠N光子输出组件,保真度大于90%的任意高的光子数。因此,简单的分束器操作可以将下转换光的2光子相干性转换为几乎最佳的N光子相干性。

英文摘要:

We show that the quantum interference between downconverted photon pairs and photons from coherent laser light can produce a maximally path entangled N-photon output component with a fidelity greater than 90% for arbitrarily high photon numbers. A simple beam splitter operation can thus transform the 2-photon coherence of down-converted light into an almost optimal N-photon coherence.

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