学术活动
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2023-1208
报告题目:物理系colloquium: Discovery of high-Tc superconductivity in a nickelate under pressure 报告人:王猛中山大学物理学院教授报告时间:2023-12-14 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:High-transition-temperature (high-Tc) superconductivity in cuprates has been discovered for more than three decades, but the underlying mechanism remains a mystery. Cuprates are the only unconven...
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2023-1204
Title: Patchy dark screeningSpeaker: Junwu Huang 黄俊午 (Perimeter Institute)Time: 2:00 pm, Dec 7 (Thursday) 2023Location: 理科楼C302Abstract: I will discuss anisotropic (patchy) screening induced by the resonant conversion of cosmic microwave background (CMB) photons into light bosons in the dark sector as they cross non-linear large scale structure (LSS). Using kinetically mixed dark photon a...
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2023-1201
报告题目：关联电子体系对称性的人工操控报 告 人： 张金星 教授，北京师范大学报告时间：2023年12月06日16:00报告地点：理科楼C302报告摘要：实现物质对称性的调控是研究凝聚态物理和创造新奇现象的重要基础。半个世纪以前，物理学家安德森就提到凝聚态物质的研究即是对称性的研究，朗道的唯象理论也特别指出物质相变的发生必然伴随着对称性的破缺。近年来的理论和实验研究发现，在关联电子材料中打破空间或时间反演对称性将有...
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2023-1128
Title: Complexity and order in approximate quantum error-correcting codes报告人: 刘子文（丘成桐数学科学中心）时间地点：11月28日（周二）下午 2:00pm，静斋105Abstract: Quantum codes achieving approximate quantum error correction (AQEC) are useful, often fundamentally important, from both practical and physical perspectives but lack a systematic understanding. In this work, we establish rigorous co...
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2023-1127
报告题目:物理系colloquium: 镍氧化物高温超导研究 报告人:张广铭清华大学物理系报告时间:2023-11-30 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:镍氧化物超导是近几年新发现的非常规超导体系，分别为Lnn+1NinO3n+1和Lnn+1NinO2n+2钙钛矿结构，其中Ln代表稀土元素La、Pr、Nd等。2019年，美国科学家首先在Nd1-xSrxNiO2薄膜中发现超导电性，但超导转变温度仅有15 K，压力下也没有超过40 K。2023年，中国科学家在双...
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2023-1121
Title: Physics opportunities and challenges at future multi-TeV lepton collidersSpeaker: Yang Ma 马杨 (INFN Bologna)Time: 2:00 pm, Nov 24(Friday) 2023Location: 理科楼C109Abstract: The largest scientific marvel ever constructed by humankind, the Large Hadron Collider (LHC) at CERN, has etched its name in history with groundbreaking discoveries, most notably the revelation of the Higgs boson. Fas...
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2023-1121
Title: Analytic Formulae for Inflationary Correlators with Dynamical MassSpeaker: Fumiya Sano (Tokyo Institute of Technology)Time: 2:00 pm, Nov 23 (Thursday) 2023Location: 理科楼C302Abstract: Massive fields can imprint unique oscillatory features on primordial correlation functions or inflationary correlators, which is dubbed the cosmological collider signal. In this work, we analytically inves...
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2023-1120
报告题目:物理系colloquium: 阿秒脉冲的产生、应用及发展展望 报告人:魏志义中国科学院物理研究所研究员报告时间:2023-11-23 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:超快激光一直是激光科学与技术的前沿内容之一，也是人们开展超快科学、强场物理、精密计量的基础及不可或缺的手段，迄今已产生多项诺贝尔奖。自上世纪 80 年代以来，随着啁啾脉冲放大技术，高次谐波产生技术、克尔透镜锁模技术及载波包络相位...
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2023-1120
报告题目：Femtosecond coherent manipulation of magnetism in solids报告人：Davide Bossini时间：2023-11-22 10：00地点：物理系理科楼C302摘要：The wildly growing field of light-matter interaction in solids is currently addressing several fundamental questions. A major topic of investigation concerns the possibility to optically manipulate the macroscopic electronic, magnetic and lattice properties ...
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2023-1120
报告题目：自组装氧化物薄膜：从设计到应用报告人：杨浩, 南京航空航天大学时间：2023年11月24日(周五） 10：30地点：物理系B315Abstract: Self-assembly has been approved to be a useful method to fabricate oxide thin films with a rich variety of periodic nanoscale patterns. Recent efforts have been focused on how to make the self-assembly controllable. In a film-on-substrate geometry, epitaxial composit...
