11.17
Gravitational waves & black holes as probes of new physics
报告人：
Dr. Luis Lehner, Perimeter Institute
时 间：
星期一 2025-11-17 14:00 - 15:00
地 点：
Tsung-Dao Lee Institute/N6F-N600-Lecture Room
Tencent Meeting：
https://meeting.tencent.com/dm/ZNgOUAmuwEw7
ID: 432844251 (no password）
摘 要：
The advent of gravitational wave astronomy, as well as advances in our abilities to scrutinize the strong regime of gravity is enabling the exploration of both fundamental questions in gravity as well as comprehend this regime for astrophysical considerations. In this talk I will discuss some particularly interesting scenarios together with new questions that for the (near) future.
报告如有变动，请查看：
https://tdli.sjtu.edu.cn/event/4571
11.18
电写入磁霍普夫子
报告人：
Dr. Haifeng Du (杜海峰)
时 间：
星期二 2025-11-18 14:30
地 点：
Room 300, No.5, New Buildings of Sciences
摘 要：
磁性霍普子（Magnetic hopfion）是二维磁斯格明子在三维空间中的对应体，作为一种关键的拓扑孤子，为拓扑磁性向三维扩展提供了重要途径。然而，其实验实现一直未能取得突破。在本报告中，我们将首先介绍稳态强磁场实验装置，然后介绍在手性磁体 FeGe 中通过纳米尺度电流脉冲激发，在零外磁场条件下实现了磁性霍普子的可控成核。通过转角定量电子全息技术结合微磁学模拟，我们解析了霍普子的三维自旋结构。值得注意的是，该霍普子在电流驱动下表现出无霍尔效应的准直运动行为。我们的研究建立了一种易于实现的实验平台，为进一步探索三维拓扑孤子提供了新的途径，并展示了其在潜在应用中的重要前景。
报告如有变动，请查看：
https://mp.weixin.qq.com/s/D6n0zCdE9LZZz_Tv3y2AUQ
11.19
江门中微子实验国际合作组汇报
报告人：
孟月/黄俊挺上海交通大学
时 间：
星期三 2025-11-19 10:00-12:00
地 点：
Room 300, No.5, New Buildings of Sciences
摘 要：
江门中微子实验(JUNO)位于中国广东江门地下约700米处，是一项旨在揭示中微子基本性质的大型实验。其主要科学目标是确定中微子质量顺序，并以高精度测量中微子振荡参数，从而深化人类对中微子性质及其在粒子物理标准模型中作用的理解。经过十三年的建设与调试，JUNO于2025年8月26日正式开始取数。本报告将发布JUNO的首个物理结果，并重点展示上海交通大学在实验中硬件建设与数据分析方面的重要贡献。
报告如有变动，请查看：
https://www.physics.sjtu.edu.cn/index_report_colloquium/5818.html
11.19
Pattern of Fractional Quantum Hall States
报告人：
Dr. Xi Lin（林熙）, International Center for Quantum Materials, Peking University
时 间：
星期三 2025-11-19 15:00
地 点：
Room 300, No.5, New Buildings of Sciences
摘 要：
Of all the ultra-low temperature properties of a conductive sample, resistance is probably the easiest to measure. This presentation will briefly introduce our efforts to achieve an ultra-low temperature environment, and to perform resistance measurements with reasonable precision and resolution. Fractional quantum Hall (FQH) effect is an example of topological phenomena driven by strong electronic correlation. Thanks to the persistent efforts of building new platforms and making higher quality samples, around 100 FQH states have been unveiled in experiments. This presentation will also discuss the resistance measurement of FQH states in our dilution and nuclear adiabatic demagnetization refrigerators. In addition to many FQH states that have already been identified in previous works, new longitudinal resistance dips are observed at 17/33, 15/31 and other filling factors. We summarize the observed fractions and propose a pattern to account for their experimental appearance that provides an intuitive picture about the relative strengths of different FQH states.
报告如有变动，请查看：https://www.physics.sjtu.edu.cn/index_report_colloquium/5817.html
11.21
Neutrino Physics: Yesterday, Today and Tomorrow
报告人：
Dr. Dmitry V. Naumov, Joint Institute for Nuclear Research (JINR)
时 间：
星期五 2025-11-21 10:00 - 11:30
地 点：
Room 603, No.5, New Buildings of Sciences
Tencent Meeting：
https://meeting.tencent.com/dm/SJZ1L8TroUXh
ID: 419924233, Password: 123456
摘 要：
Neutrinos are the most elusive messengers of the quantum world — almost massless, neutral, yet fundamental to the structure of matter and the evolution of the Universe. Their discovery transformed our understanding of the weak interaction, while their strange properties hint that the Standard Model is not the full story.
This lecture follows the neutrino’s path from theoretical enigma to a key player in modern physics. Its quantum transformations reveal a profound interplay between mass, flavor, and symmetry, and continue to guide the quest for a unified description of nature — one that may ultimately bridge the smallest quantum scales with the grandest cosmic structures.
报告如有变动，请查看：
https://tdli.sjtu.edu.cn/event/4575
11.21
Construction and programmable tuning of 2D interfacial quantum states
报告人：
Dr. Bin Cheng (程斌）, Nanjing University & Nanjing University of Science and Technology
时 间：
星期五 2025-11-21 10:30 - 11:30
地 点：
Tsung-Dao Lee Institute/N6F-N600-Lecture Room
Tencent Meeting：
https://meeting.tencent.com/dm/clJFEiH7YvrV
ID: 548822241 (no password)
摘 要：
Van der Waals heterostructures, built from two-dimensional materials, feature atomically flat interfaces and exhibit rich interlayer coupling, leading to the emergence of diverse novel quantum states. The precise construction and programmable control of these interfacial quantum states are essential for realizing their potential in functional device applications. In this talk, I will present our recent progress in the engineering and programmable tuning of 2D interfacial quantum states and phenomena—including ferroelectric topological edge states, interfacial magnetic spin Hall effects, nonreciprocal Ising superconductivity, and isotropic interfacial ferromagnetism in graphene moiré heterostructures, topological semimetal/Fe3GeTe2 heterostructures and twisted Ising superconductors. By achieving nonvolatile control over these quantum states, we have designed innovative devices such as noise-immune neuromorphic computing systems, quantum neuron transistors, and superconducting Josephson junctions capable of continuously storing quantum phase information.
报告如有变动，请查看：
https://tdli.sjtu.edu.cn/event/4573
编辑：孟闻卓
责任编辑：张小丽
