论文标题
来自0型自发参数下转换的电信波长光子对的空间和光谱表征
Spatial and spectral characterization of photon pairs at telecommunication-wavelength from type-0 spontaneous parametric down-conversion
论文作者
论文摘要
纠缠 - 光源源的透彻表征对于它们在量子通信中的最佳使用至关重要。但是，在电信波长中，此任务并非微不足道。虽然相机和光谱仪是针对可见和近红外光谱开发的，但不适用于中红外范围。在这里，我们提出了以0型相匹配的自发参数下转换源发出的光子对的空间和光谱表征。我们通过实验表明如何通过晶体温度修饰这些光子特性。该参数允许轻松修改光子对属性，以拟合基于一个纠缠光子源的新型多路复用方案。我们的结果为电信波长的量子相关光子对的空间和光谱特性的最佳设计和使用铺平了道路。
The thorough characterization of entangled-photon sources is vital for their optimal use in quantum communication. However, this task is not trivial at telecommunication wavelengths. While cameras and spectrometers are well developed for visible and near-infrared spectra, that does not apply in the mid-infrared range. Here we present a spatial and spectral characterization of photon pairs emitted in a type-0 phase-matched spontaneous parametric down-converted source. We experimentally show how these photon properties are modified by the crystal temperature. This parameter allows easy modification of photon-pair properties to fit novel multiplexing schemes based on only one entanglement photon source. Our results pave the way for the optimal design and use of spatial and spectral properties of quantum-correlated photon pairs at telecommunication wavelengths.
