论文标题
多模高斯量子光学和照片检测的一般框架：应用于洪 - 摩曼德的干扰，被过滤的宣传单光子源
A general framework for multimode Gaussian quantum optics and photo-detection: application to Hong-Ou-Mandel interference with filtered heralded single photon sources
论文作者
论文摘要
大规模量子信息处理的挑战性要求使用参数宣传单个光子源处理涉及最大化干扰可见性，同时保持可接受的光子生成速率。通过开发一个一般的理论框架，该框架使我们能够将大量的空间和光谱模式与线性和非线性光学元素一起使用，我们研究了光谱和光子数杂质对所测得的hong-mandel干扰可见性的综合效应，即参数光源的量子源和数量分辨率的检测器，以及既定效应的效果效果。我们发现，即使使用数量分解检测，也必须在任何程度的光谱杂质中，提高光子生成速率也必定会降低干扰可见性。虽然紧密的光谱滤波可用于在低功率下执行光谱纯度和增加的干扰可见性，但我们发现诱导的光子数杂质会导致干扰可见性和泵功率的先驱效率降低，而最大发电率也降低了。
The challenging requirements of large scale quantum information processing using parametric heralded single photon sources involves maximising the interference visibility whilst maintaining an acceptable photon generation rate. By developing a general theoretical framework that allows us to include large numbers of spatial and spectral modes together with linear and non-linear optical elements, we investigate the combined effects of spectral and photon number impurity on the measured Hong--Ou--Mandel interference visibility of parametric photon sources, considering both threshold and number resolving detectors, together with the effects of spectral filtering. We find that for any degree of spectral impurity, increasing the photon generation rate necessarily decreases the interference visibility, even when using number resolving detection. While tight spectral filtering can be used to enforce spectral purity and increased interference visibility at low powers, we find that the induced photon number impurity results in a decreasing interference visibility and heralding efficiency with pump power, while the maximum generation rate is also reduced.
