Compact Engineering of Path-Entangled Sources from a Monolithic Quadratic Nonlinear Photonic Crystal
Compact Engineering of Path-Entangled Sources from a Monolithic Quadratic Nonlinear Photonic Crystal
复制标题
单片二次非线性光子晶体路径纠缠源的紧凑工程
DOI：
10.1103/physrevlett.111.023603
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发表时间：
2013-07-12
影响因子：
8.6
通讯作者：
Zhu, S. N.
中科院分区：
文献类型：
--
作者：
Jin, H.;Xu, P.;Zhu, S. N.
光子纠缠态的集成实现是集成量子光学发展的必然趋势。在这里，我们报告的紧凑工程可控光子路径纠缠态的单片二次非线性光子晶体。该晶体作为一个相干分束器，将光子分配到设计的空间模式，产生预示着单光子和吸引人的光束状双光子路径纠缠。我们通过量子空间拍频实验研究了路径纠缠。这种多功能纠缠源可以进一步扩展到高维形式和多光子水平，这为设计小型化量子光源铺平了道路。
An integrated realization of photonic entangled states becomes an inevitable tendency toward integrated quantum optics. Here we report the compact engineering of steerable photonic path-entangled states from a monolithic quadratic nonlinear photonic crystal. The crystal acts as a coherent beam splitter to distribute photons into designed spatial modes, producing the heralded single-photon and appealing beamlike two-photon path entanglement. We characterize the path entanglement by implementing quantum spatial beating experiments. Such a multifunctional entangled source can be further extended to the high-dimensional fashion and multiphoton level, which paves a desirable way to engineering miniaturized quantum light sources.