1III-V compound semiconductor nanowire THz detectors | International Young Scholar Forum
报告人:Dr. Kun Peng,Department of Physics, University of Oxford
时间:11月10日(周二)16:00
单位:中科院物理所
参加方式:讲座以线上形式进行,采用“腾讯会议”软件
会议ID:319 800 876
会议密码:1110
直播链接:https://meeting.tencent.com/l/ZBwCnKsfi7yZ
摘要:
The terahertz (THz) band occupies the transition region on the electromagnetic spectrum between microwaves and infrared, spanning from 100 GHz to 30 THz, thus enabling a broad range of applications from high-speed wireless communications to spectroscopy and imaging. The THz communications are considered as a key technology for future 6G wireless communications. While the THz image scanners are anticipated to be ideal alternative to the X-ray scanners for future medical examination and airport security screening beneficial from their ionization-free nature and transparency to non-conducting materials. However, the lack of conventional materials and approaches for efficient THz generation and detection, makes it difficult to build low-cost, compact, and efficient THz instrumentation, which hinders their widespread use. The THz optoelectronics based on III-V semiconductor nanowires have been recently demonstrated as promising nano-components for high-performance compact THz systems with sub-wavelength spatial resolution, broadband spectral sensitivity, and polarization sensitivity. This talk is to present my research results on the development of III-V semiconductor nanowires for THz applications, particularly for THz detection.
报告人简介:
Kun Peng is currently a postdoctoral researcher working in the department of Physics, University of Oxford. She graduated with a bachelor’s degree in Materials Physics from Xi’an Jiaotong University (2008), followed with a master's degree in Atomic and Molecular Physics from Fudan University (2011). In 2012, she was awarded the International Postgraduate Research Scholarship and began her DPhil in the group of Distinguished Prof Chennupati Jagadish at the Australian National University (ANU). After thesis submission, she stayed at ANU to become a researcher assistant until Oct 2017, when she joined Prof. Michael Johnston’s Oxford THz Photonics Group at the University of Oxford. Her research specialises in the development of semiconductor nanomaterials for electronic and optoelectronic applications with a particular focus on the use of III-V semiconductor nanowires for terahertz (THz) detection. Her current research interests lie in exploring the nature of one-dimensional nanomaterials (such as nanowires, nanorods and nanotubes) and exploiting their exceptional properties for THz applications (such as THz sources, detectors and modulators).
报告人:孙方稳,中国科学技术大学
时间:11月10日(周二)10:00
单位:清华大学
地点:物理系理科楼B406
摘要:
3Computational study of peptide self-assembly, co-assembly and amyloid fibril disruption
报告人:Professor Guanghong Wei,Fudan University
时间:11月10日(周二)10:00
单位:中国科学院理论物理研究所、彭桓武理论物理创新研究中心
参会方式:蔻享直播
直播链接:https://www.koushare.com/lives/room/734228
摘要:
Peptide self-assembly has attracted increasing attention because of its importance in the design of novel biomaterials and its close association with many ageing-related degenerative diseases (such as Alzheimer’s and Parkinson’s diseases) still with no cure yet. Inhibition of the pathological self-assembly (i.e. amyloid fibril formation) of proteins and disruption of preformed protofibrils by natural small molecules are two major promising therapeutic strategies in combating amyloidosis diseases. Unraveling the mechanisms of peptide self-assembly and amyloid fibril inhibition is fundamentally important for the design of bio-inspired nanomaterials and the development of potent drug candidates for the treatment of amyloidosis. Molecular dynamic (MD) simulations play an essential role by allowing generation of sufficiently accurate conformational ensembles which can be used to interpret experimental observations, predict new nanostructures and reveal the molecular interaction mechanisms. Here, I present our recent MD simulation results of peptide self-assembly, co-assembly/aggregation and the molecular mechanisms by which natural small molecules disrupt Aβ protofibrils - the key intermediates of Aβ fibril association and elongation.
报告人:迟楠,复旦大学
时间:11月10日(周二)19:30
单位:武汉光电国家研究中心
参会方式:蔻享直播
直播链接:https://www.koushare.com/lives/room/648143
摘要:
针对未来6G移动通信和广泛覆盖的重大需求,解决电磁频谱危机,为国家下一代无线通信技术转型奠定基础,需拓展新型频谱载波资源(太赫兹、可见光、紫外和红外波段)。可见光通信作为一种利用400-800THz无需授权频段的高速通信技术,将在6G网络中担任重要的角色。本文从器件、速率、特殊场景应用、异构组网等方面讨论了可见光通信的进展,并介绍了现阶段面临的挑战和对未来的展望。
报告人简介:
迟楠,女,教授,博士生导师,现任复旦大学信息科学与工程学院院长。国家杰出青年科学基金获得者,美国光学学会OSA Fellow。长期从事高速光通信和高速可见光通信方面的研究,主要研究高谱效率多维多阶光调制技术和数字信号处理技术。发表SCI检索论文260余篇,Google引用7800余次,4篇ESI高被引论文,出版专著6部。5次担任光通信国际会议主席,近5年应邀在国际会议作大会主题报告3次,特邀报告30余次。获教育部自然科学二等奖、中国产学研合作创新一等奖、国际工业博览会创新奖等各1项。
报告人:贺煜,南方科技大学
时间:11月11日(周三)10:00
单位:中科院物理所
地点:中科院物理研究所M楼238会议室
摘要:
报告人简介:
贺煜,副研究员,独立PI。于2020年初加入南方科技大学深圳量子科学与工程研究院,牵头带领硅基原子量子计算团队。主要研究方向为半导体量子计算和量子网络,博士期间在砷化镓自组装量子点方面研究,核心成果包括:一系列单光子源方面开创性工作;首次在量子点中观察到自发辐射谱线擦除效应;实现世界最高光子数波色抽样(为量子计算机首次超越第一台电子管计算机ENIAC,入选中科院评选的“2017年中国十大科技进展新闻”);实现单光子向单电子自旋的量子传态,并验证了单个光子和电子之间的纠缠等。博士后期间专注于硅量子计算,主要工作有:实现了在硅基磷掺杂方面的第一个高速两比特门(Nature,571,371 (2019) 封面文章,被全球多家媒体报道,称之为“在构建原子尺度量子计算机上里程碑式的工作”,并入选“2019年全球十大量子计算实验”);实现了利用全统计计数方法对比特读出保真度的优化;参与了硅基磷掺杂方面的第一个单比特门的工作;参与构建比特读出保真度分析的理论工作等。共发表22篇SCI论文,其中1篇Nature, 2篇Nature Photonics,2篇Nature Nanotechnology,9篇Physical Review Letters,总引用2500多次,H因子17。
6CUDA(1):CUDA Introduction and Advanced Programming | 理论物理先进计算系列培训
报告人:刘芳,中科院计算机网络信息中心
时间:11月11日(周三)16:00
单位:中科院理论物理研究所
直播链接:http://live.xylink.com/live/v/9680cba57550aa88017592914a8a6991
小鱼易连会议室:9000240612
摘要:
报告人简介:
2005年7月毕业于南京大学计算机科学与技术系,2010年7月毕业于中科院软件所,获计算机应用工学博士学位,2010年7月至今在中科院计算机网络信息信息中心工作,现任副研究员,主要研究方向为基于GPU的通用计算,以及人工智能平台环境建设与服务。
7Searching for Muon to Electron Conversion in a Muonic Atom - Quest for New Physic
报告人:Yoshitaka Kuno,大阪大学
时间:11月11日(周三)14:00
单位:Frontiers of Physics 编辑部
参会方式:蔻享直播
直播链接:https://www.koushare.com/lives/room/413267
摘要:
Muon to electron conversion is a process which violates the conservation of charged lepton flavor. It is forbidden in the Standard Model (SM), but new physics beyond the SM predict its sizable rate. New experiments named COMET under preparation in Japan and the one in the US will start soon in a few years, aiming at improvement of more than four orders of magnitude, with novel highly-intense muon sources. This talk will discuss its physics motivation, and an outlook on the experiments. And other interesting searches for new physics by using a muonic atom will be also mentioned.
报告人简介:
Yoshitaka Kuno(久野良孝)教授,1984年于东京大学获得博士学位,之后历任东京大学和加拿大核物理加速器实验中心TRIUMF研究助理。1988年起获得TRIUMF永久职位。1992年,久野教授返回日本加速器国家实验室KEK担任副教授。2000年起入职大阪大学全职教授,领导COMET实验团队开展加速器缪子源及其前沿科学研究工作,现为COMET实验国际合作组发言人。现担任Frontiers of Physics期刊的Division Editor。
8Hydrodynamics of topological spin textures and applications
报告人:加州州立大学洛杉矶分校
时间:11月12日(周四)14:00
单位:中科院物理研究所
地点:M830
摘要:
Topological spin textures, such as domain walls in one dimension, vortices in two dimensions and magnetic hedgehogs in three dimensions, are promising candidates for nonlocal transport due to their stability against local fluctuations. They follow general topological conservation laws, based on which hydrodynamic theories can be formulated. In this talk, I will introduce the physical principles to drive, transport, and detect topological spin textures, and demonstrate their potential applications in experimentally viable proposals. In particular, I will give three examples: a promising all-spin hardware implementation of neuromorphic computing utilizing domain walls in quasi-one-dimensional antiferromagnets; an energy-storage proposal based on the free energy stored in winding textures, which can be controlled via a vorticity flow; and a scheme for three-dimensional nonlocal transport of magnetic hedgehogs.
If time permits, I will briefly talk about a magnetoelastic coupling induced topological structure in the hybridized magnon-phonon bands in two dimensional antiferromagnets and its thermal Hall signatures.
报告人:龚文敏,北京师范大学数学科学学院
时间:11月12日(周四)15:00
单位:山西大学理论物理研究所
参会方式:蔻享直播
直播链接:https://www.koushare.com/lives/room/546318
摘要:
哈密顿系统,尤其是天体力学中的哈密顿系统,关于其周期解的研究已有很长一段历史了,物理学家和数学家都对其有着很大的研究兴趣。数学上,自法国著名数学家庞加莱提出的开创性研究方法以来,这方面的研究已取得了很丰硕的成果。本次报告主要从变分法和莫尔斯理论两方面来探讨哈密顿系统的解的存在性与多解性问题。
报告人简介:
2016年博士毕业于北京师范大学,2016—2018清华大学数学系博士后,2018入职北师大担任讲师。主要研究兴趣:辛几何拓扑与流形上的分析等。
报告人:王向斌,清华大学
时间:11月12日(周四)12:00
单位:中科院物理所
参加方式:讲座以线上形式进行,采用“腾讯会议”软件
会议ID:382 155 009
会议密码:1112
直播链接:https://meeting.tencent.com/l/5rMuJ7nDGsay
摘要:
We shall introduce theories of the decoy-state method and its applications in measurement-device-independent (MDI) quantum key distribution (QKD) and the sending-or-not-sending (SNS) twin-field QKD. We shall also report their applications in experiments including the satellite based QKD, the 404-km MDIQKD, and the 509-km twin field SNS QKD.
报告人简介:
Professor of physics, Tsinghua University since 2006. PhD from National University of Singapore, 2000;
Reseracher in Imai project Japan Science and Technology Agency from 2000-2006;
Director of Jinan Institute of Quantum Technology since 2011.
He published more than 100 peer reviewed papers including 3 nature, 10 PRL.
The papers have attracted more than 5000 citations (Web of Science)
报告人:龙桂鲁教授, 清华大学物理系
时间:11月12日(周四)16:00
单位:清华大学
地点:理科楼郑裕彤讲堂
摘要:
量子直接通信是龙桂鲁教授在2000年原创提出的,在量子信道直接传输信息,是国际上三种最主要的量子保密通信理论之一。本报告将介绍量子直接通信的原理、典型协议,以及实用化关键技术和样机的研发情况。
报告人:马永革,北京师范大学物理系
时间:11月13日(周五)20:00
单位:Frontiers of Physics编辑部
参会方式:蔻享直播
直播链接:https://www.koushare.com/lives/room/698624
摘要:
本报告将回顾狭义相对论和广义相对论的产生线索和这两个基本理论所体现的物理思想,特别是从狭义相对论发展到广义相对论的思想脉络,以及由此引发的人类时空观的变革,进而发掘它们对当今物理学研究的启示作用。
报告人简介:
马永革,北京师范大学物理系教授,博士生导师;研究领域涉及广义相对论和量子引力;主持完成国家自然科学基金重点项目等多个课题的研究,研究成果获得教育部2016年度高等学校科学研究优秀成果奖;曾任国际广义相对论和引力学会理事,现任中国物理学会引力与相对论天体物理分会副理事长,欧洲物理快报(EPL)编委。
更多报告信息:中国物理学会期刊网学术讲座列表