论文标题
基于拉曼活性分子的合奏的预言单光子源
Heralded single-photon source based on ensemble of Raman active molecules
论文作者
论文摘要
在不同频率下具有高相关性的光可用于创建宣传单光子源，这可以用作现有的量子加密和量子传送方案的基本要素。具有高相关性的自然光系统中的重要例子之一是通过自发的拉曼散射在分子合奏上产生的光。在本文中，我们调查了使用拉曼光创建宣告的单光子源的可能性。我们表明，当使用Stokes散射的光进行抗螺旋体散射的光线后，后者可能具有单光子特性。我们分析了各种负面因素对此类宣布的单光子源特性的影响，其中包括Stokes和Anti-Stokes光子之间的时间延迟，外部源的相关半径的有限性以及背景辐射。我们表明，即使无关光子的流动超过了散射的拉曼光中相关光子的流动，也可以保留单光子源的高纯度。
Light with high mutual correlations at different frequencies can be used to create heralded single-photon sources, which may serve as the basic elements of existing quantum cryptography and quantum teleportation schemes. One of the important examples in natural systems of light with high mutual correlations is the light produced by spontaneous Raman scattering on an ensemble of molecules. In this paper, we investigate the possibility of using Raman light to create a heralded single-photon source. We show that when using Stokes scattered light for postselection of an anti-Stokes scattered light, the latter may posses the single-photon properties. We analyze the influence of the various negative factors on the characteristics of such a heralded single-photon source, which include a time delay between Stokes and anti-Stokes photons, the finiteness of the correlation radius of an external source, and background radiation. We show that the high purity of the single-photon source is preserved even when the flow of uncorrelated photons exceeds the flow of correlated photons in the scattered Raman light by an order of magnitude.
