We report an all-fiber-based experimental setup to generate a correlated photon-pair comb using Four Wave Mixing (FWM) in Highly Non-Linear Fiber (HNLF). Temporal correlations of the generated photons were confirmed through coincidence measurements. We observed a maximum of 32 kcps, with a coincidence to accidental ratio of 17$\pm$1. To further understand the underlying processes, we also simulated a generalized FWM event involving the interaction between an arbitrary frequency comb and a Continuous Wave (CW) pump. Non-linear dynamics through the HNLF were modelled using Schrödinger propagation equations, with numerical predictions agreeing with our experimental results.
Multi-channel, tunable quantum photonic devices on a fiber-integrated platform
Ulsan National Institute of Science and Technology (UNIST)（蔚山科学技术院）；Electronics and Telecommunications Research Institute (ETRI)（电子通信研究所）；University of Kassel（卡塞尔大学）
A wavelength-tunable fiber-coupled source of narrowband entangled photons
我们展示了一个波长可调的，光纤耦合的偏振纠缠光子源，具有极高的光谱亮度和纠缠质量。使用25 mm PPKTP晶体内的偏振Sagnac干涉仪，我们检测到的光谱亮度为273000对/（s mW nm），一个因素的28比以前可比的来源，而状态断层扫描显示的双光子状态有一个纠结的T=0.987。这种改进是通过使用长晶体、仔细选择聚焦参数和单模光纤耦合实现的。我们证明，由于特定的几何形状的设置，信号和空闲波长可以在很宽的范围内调谐而不会损失纠缠。
Demonstration of a Monolithic and Fully Telecom-Fiber-Compatible Tunable Source of Polarization Entangled Photon Pairs Based on a van der Waals Material
Friedrich Schiller University Jena（耶拿弗里德里希·席勒大学）；Australian National University（澳大利亚国立大学）；Fraunhofer-Institute for Applied Optics and Precision Engineering IOF（弗劳恩霍夫应用光学和精密工程研究所IOF）；Max Planck School of Photonics（马克斯·普朗克光子学院）
Mode-tunable inter-core coupling of photon-number-resolved quantum light in a telecom multicore fiber
Department of Physics, University at Buffalo, The State University of New York（纽约州立大学布法罗分校物理系）；Science and Technology Division, Corning Research and Development Corporation（康宁研发公司科学与技术部）
Probing the BCS-BEC crossover with photons in a nonlinear optical fiber
我们提出了一个方案，其中强关联光子内产生的空芯一维光纤填充两个冷原子物种可以用来模拟BCS-BEC交叉。我们首先展示了如何在系统中的平稳轻物质激发（极化激元）可以实现光学可调谐的两个组件的玻色-哈伯德模型，然后分析所需的光学参数制度，以产生一个有效的费米-哈伯德模型的光子表现出库珀配对。由于光子关联的{ \it in situ}可用性，可以有效地观察系统的特征关联相位。
