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arXiv quant-ph/0608052quant-ph
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利用Fock态过滤产生纠缠态

Entanglement generation by Fock-state filtration

K. J. Resch, J. L. O'Brien, T. J. Weinhold, K. Sanaka, A. G. White

摘要:

我们展示了一个Fock状态过滤器,它能够优先阻止光子对的单光子。大的条件非线性是基于高阶量子干涉,使用线性光学,辅助光子和测量。我们证明了该滤波器的相干行为,通过使用它来转换非纠缠光子对的路径纠缠态。我们通过将路径信息转换为偏振信息来量化纠缠度,应用量子态层析成像,我们测量了T=(20+/-9)%的纠缠度。

英文摘要:

We demonstrate a Fock-state filter which is capable of preferentially blocking single photons over photon pairs. The large conditional nonlinearities are based on higher-order quantum interference, using linear optics, an ancilla photon, and measurement. We demonstrate that the filter acts coherently by using it to convert unentangled photon pairs to a path-entangled state. We quantify the degree of entanglement by transforming the path information to polarisation information, applying quantum state tomography we measure a tangle of T=(20+/-9)%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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