学术活动
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2022-1009
报告人:张坚地 教授中国科学院物理研究所时间:2022年10月11日 上午10:30地点:理科楼C302报告摘要:“界面就是器件”。相比于传统半导体材料,关联氧化物材料中存在d电子的多种自由度耦合,具有一系列丰富且相互竞争的磁电量子有序态和能量相近的低能激发态,因而蕴含着塑造多维信息载体的可能,是探索下一代高速、低功耗信息器件的战略要地。然而,如何揭示界面磁电态的微观起源,理解界面微观磁电态耦合与宏观物性的构效关...
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2022-1005
报告题目:解读2022年度诺贝尔物理学奖报告人:尤力清华大学物理系教授报告时间:2022-10-06 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系简介:法国科学家阿兰·阿斯佩 (Alain Aspect)、美国科学家约翰·克劳泽 (John Clauser) 、奥地利科学家安东·塞林格 (Anton Zeilinger) 荣膺2022年诺贝尔物理学奖,以表彰他们为纠缠光子实验、证明违反贝尔不等式和开创性的量子信息科学所作出的贡献。清华大学物理系的尤力教授将为大家解读此...
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2022-1005
Title: Search for Extended Scalar from CP-odd Component in Higgs BosonSpeaker: Changlong Xu (许昌龙)Time: 1:30pm, Oct 06 (Thursday) 2022地点:理科楼C302Abstract: The scalar extensions of the Standard Model are widely predicted by a lot of new physics models. But till now, 125GeV Higgs boson is the only scalar we found. In this talk, I will explain why the CP-odd component in Higgs boson indicat...
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2022-1005
报告题目:Symmetry control and emergent phenomena in square-lattice iridates报告人:Jian Liu, University of Tennessee时间地点:2022-10-05 10:00 腾讯会议号:685-601-826摘要:Spin-orbit coupling (SOC) is a key ingredient of nontrivial band topology in weakly interacting materials. On the other hand, the impact of SOC in strongly correlated systems often manifests in magnetic anisotropy. 5d transi...
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2022-0927
Title: Space-borne Gravitational Wave Detection, and the Study of Gravitational Theory(空间引力波探测与引力理论的研究)Speaker: Jian-dong Zhang 张建东 (Sun Yat-Sen University)Time: 1:30pm, Sep 29 (Thursday) 2022腾讯会议:814-2523-8667 https://meeting.tencent.com/dm/enw38q7VWH8aAbstract: Nearly one hundred events of gravitational wave signals have been detected with ground-based gravitational w...
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2022-0923
报告题目:物理系colloquium: 基准钟研究及秒定义变革报告人:房芳中国计量科学研究院时频所报告时间:2022-09-29 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系简介:基准钟是直接复现秒定义的原子钟。目前铯原子喷泉基准钟的相对频率不确定度A类(稳定度)已经达到E-16@1 d,B类达到(1-2)E-16,主要受限于微波相关频移。随着原子操控和超稳激光技术的发展,光钟频率不确定度已经比现在的基准钟提高2个数量级,并且通过光梳可以将...
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2022-0923
报告题目:激子与微腔的相互作用与调控报告人:许秀来,北京大学时间地点:2022-09-26 16:00 理科楼C302摘要:微腔-量子点耦合系统具有高的品质因子、较小的模式体积以及可以片上集成等优点,为固态腔量子电动力学物理以及实现量子光学网络器件提供了理想的平台。本报告将介绍半导体单量子点中激子态的外场调控,以及单个量子点激子与光子晶体微腔的相互作用及其在光子晶体波导中的可扩展性。另外,我们还介绍高鲁棒性的二维材...
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2022-0923
报告题目:Symmetry-broken Microcavity Optics报告人:Yun-Feng Xiao, Peking University时间地点:2022-09-26 15:00 理科楼C302摘要:Confinement and manipulation of photons using microcavities have triggered intense research interest in both fundamental and applied photonics for more than two decades. Prominent examples are ultrahigh-Q whispering gallery microcavities which confine photons by means...
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2022-0920
报告题目:理学院科学之美讲坛:Half-quantized Transport in Axion Insulators报告人:谢心澄国家自然科学基金委员会副主任报告时间:2022-09-22 16:00报告地点:理科楼郑裕彤讲堂主办单位:理学院(主办),物理系(承办)简介:We propose that half-quantized helical hinge currents manifest as the fingerprint of the axion insulator. These helical hinge currents microscopically originate from the lateral Goos-Hänche...
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2022-0920
Title: Explore dark matter by gravitational wave and radio signalsSpeaker: Fa Peng Huang 黄发朋 (Sun Yat-Sen University)Time: 1:30pm, Sep 22 (Thursday) 2022腾讯会议:814-2523-8667 https://meeting.tencent.com/dm/enw38q7VWH8aAbstract: The LIGO-Virgo Collaboration has so far detected more than 100 black holes, whose mass distribution appears to have a peak at ∼ 30M☉ and two tails on the ends. By...