【青年科学半月谈】德国马普光科学研究所顾雪梅 学术报告

报告题目：

From multi-photon entanglement generation to a physical graph representation: conceptual understanding and automated design of quantum optics experiments

报告时间：

2022年12月1日（周四）15:00

报告嘉宾：

顾雪梅（德国马普光科学研究所）

主办单位：

蔻享学术

直播通道

蔻享学术直播间

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报告人介绍

顾雪梅 博士

德国马普光科学研究所

顾雪梅博士，现为德国马普光科学研究所博士后，洪堡学者，近期研究方向为人工智能科学发现，尤其是AI探索复杂量子系统中的新物理现象及其实际应用。2020年毕业于南京大学，获计算机科学与技术博士学位，2017年至2019年于奥地利科学院量子光学与量子信息研究所Anton Zeilinger教授研究组联合培养；2020年至2022年在中国科学技术大学微尺度物质科学国家研究中心陆朝阳教授研究组从事博士后研究。研究内容包括多光子纠缠源、量子物理基础问题研究、光学理论和实验研究、量子网络、光量子计算、AI辅助设计量子光学实验、人工智能、机器学习、组合数论和图论等，相关工作发表在Proc. Natl. Acad. Sci. U.S.A、Phys. Rev. Lett、Phys. Rev. A、Opt. Express等国际学术期刊上，曾获中国科学技术大学2020年墨子杰出青年博士后、微尺度国家研究中心2020年优秀博士后等荣誉。

报告简介

Quantum mechanics predicts many phenomena that seem counterintuitive from our classical physics perspective. Entanglement is one of the phenomena which plays an important role in quantum technologies ranging from communication to computation. Quantum experiments, whether for fundamental or practical ends, are unquestionably crucial to the investigation of these phenomena. Finding setups for multi-photon entanglement is a conceptual challenge for human scientists due to the counterintuitive behavior of multiparticle interference and the enormously large combinatorial search space. Recently, new possibilities have been opened by artificial discovery where artificial intelligence proposes experimental setups for the creation and manipulation of high-dimensional multi-particle entanglement. The results of quantum experiments are perfectly computable but difficult to intuitively understand.

In this talk, I will introduce a hidden connection between quantum optics experiments and the mathematical field of Graph Theory, and show how one can model and understand phenomena from modern-day photonic quantum experiments. There, a colored weighted graph can capture all the information of a quantum optical experiment. The graph can be translated back at any point to an experiment consisting of optical elements, and I will show how to translate it into several quantum optical experiments. This physical and abstract graph representation allows us to discover various quantum information tasks. With the graph-based representation of optical setups, we further develop PyTheus, an open-source, automated design and digital discovery framework for quantum optics experiments. I will showcase the applicability of PyTheus with different examples and hope it helps accelerate the development of quantum optics and offer new ideas in quantum technology.

In general, our physical graph representation of optical setups gives us a very different perspective on photonic quantum technology, and is significantly useful for the design of future quantum experiments and applications in quantum information.

青年科学半月谈聚焦基础科学相关前沿研究，是促进海内外交叉学科青年学者学术交流的讨论会。在疫情流行的大背景下，我们旨在建立并提供一个自由、开放并充满活力的在线交流平台，以促进学科发展。欢迎广大的青年科学工作者（特别是在读研究生）来参加、交流、报告！

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