量子信息交叉中心学术报告012
Title:Photonic entanglement for applications in quantum information processing Speaker: 陈圆缘（南京大学计算机科学与技术系，量子信息研究方向）
Place: RM 101，Bulg. 2，Xixi Campus (西溪校区西二楼101室)
Date and time: 14:00，April 24th，2019 （4月24日下午14:00）
Abstract：Quantum entanglement is an essential resource for a variety of researches as a direct consequence of nonlocal correlations of entangled systems that are at odds with our common-sense notions of realism and locality. I will talk about three experiments regarding the harnessing and applications of photonic entanglement.
The first is an ultra-bright source of polarization-entangled photon pairs based on time-reversed Hong-Ou-Mandel interference. Our source yields high-fidelity polarization entanglement and high pair-generation rates without any requirement for active interferometric stabilization.
The second is harnessing Hong-Ou-Mandel interference on a beam splitter to generate photon pairs in a polarization and discrete frequency entangled state. We show how independent characterization of the interference in the polarization and frequency domain allow for the verification and certification of high dimensional entanglement in the total state space.
The third is to show the using of two well-separated frequencies embedded in a quantum entangled state suffices to achieve great precision in Hong-Ou-Mandel interferometry. We determine optimum working points using a Fisher Information analysis and demonstrate the experimental feasibility of this approach by detecting thermally-induced delays in an optical fiber.
陈圆缘博士简介：陈圆缘，南京大学计算机科学与技术系，量子信息研究方向博士生。2013年加入南京大学进行硕博连读。2016-2018年在奥地利科学院量子光学和量子信息研究所（IQOQI-Vienna）进行联合培养，跟随Anton Zeilinger教授和Rupert Ursin教授从事量子通信方向的研究。目前在国际著名期刊Physical Review Letter, Optics Express等发表论文近10篇。