1

報(bào)告人：Mingu Kang，Seoul National University

時(shí)間：8月26日（周二）10:00

單位：Asian-Pacific Condensed Matter Physics (CMP) seminars

鏈接：

摘要：

Kagome lattice is one of the most fertile geometric motifs in condensed matter physics, where a unique interplay between topology, correlation, and frustration gives rise to a plethora of quantum phenomena. Charge ordering is an example of quantum states prevalently observed in various Kagome lattice materials, including AV?Sb?, ScV?Sn?, and FeGe, and is found to be intertwined with superconductivity, magnetism, and anomalous Hall effect in a nontrivial manner.

In this talk, I will present our comprehensive investigations of charge orders in Kagome lattice materials using a suite of scattering and spectroscopy techniques, including ARPES and time-resolved XRD. Our results point toward that despite their apparently similar phenomenology, the charge orders in AV?Sb?, ScV?Sn?, and FeGe each have a completely different nature, emerging from electronic instability, lattice instability, and magnetism-driven transition, respectively. Our investigations not only provide guidance on the classification of charge order in broader quantum materials, but also highlight the utility of combining complementary photon science techniques – photon-in-electron-out, photon-in-photon-out, static and time-resolved – for a deeper understanding of quantum phenomena in solids.

報(bào)告人簡介：

Mingu Kang Education 2021-2023 Ph. D. Massachusetts Institute of Technology (MIT) 2016-2020 M. S. Massachusetts Institute of Technology (MIT) 2012-2015 B. S. Pohang University of Science and Technology (POSTECH) Career 2023-2025 Kavli Postdoctoral Fellow, Kavli Institute for Nanoscience, Cornell University. Selected Publications in the last 5 years M. Kang et al., "Measurements of the quantum geometric tensor in solids", Nature Physics, 21, 110-117 (2025). M. Kang et al., "Charge order landscape and competition with superconductivity in kagome metals", Nature Materials, 22, 186-193 (2023). M. Kang et al., "Twofold van Hove singularity and origin of charge order in topological kagome superconductor CsV3Sb5", Nature Physics, 18, 301-308 (2022). M. Kang et al., "Topological flat bands in frustrated kagome lattice CoSn", Nature Communications, 11, 4004 (2020). M. Kang et al., "Dirac fermions and flat bands in the ideal kagome metal FeSn", Nature Materials, 19, 163-169 (2020).

2

報(bào)告人：付時(shí)堯，北京理工大學(xué)教授

時(shí)間：8月26日（周二）10:00

單位：晶萃光學(xué)JCOPTIX

鏈接：

摘要：

攜帶軌道角動量的渦旋光場在超大容量光通信、激光探測、高分辨率成像、激光加工、量子信息等領(lǐng)域應(yīng)用前景廣闊。渦旋光場調(diào)控是產(chǎn)生復(fù)雜渦旋光場的重要途徑之一，本團(tuán)隊(duì)長期從事渦旋光場調(diào)控技術(shù)研究，近年來在國家重點(diǎn)研發(fā)計(jì)劃、973計(jì)劃等資助下取得了一系列創(chuàng)新成果。本報(bào)告將聚焦渦旋光場的調(diào)控技術(shù)，重點(diǎn)介紹本團(tuán)隊(duì)近五年在渦旋光場調(diào)控產(chǎn)生、模場識別、畸變校正等方面的代表性研究工作。報(bào)告主要內(nèi)容包括渦旋光場的高維多自由度調(diào)控技術(shù)、全固態(tài)渦旋激光器技術(shù)、渦旋模式識別與信息處理技術(shù)、渦旋光束自適應(yīng)畸變校正技術(shù)等。此外，還將介紹本團(tuán)隊(duì)在渦旋光束通信、渦旋激光探測等領(lǐng)域的研究進(jìn)展。

報(bào)告人簡介：

付時(shí)堯，北京理工大學(xué)教授、博導(dǎo)，國家級青年人才(教育部)，主要研究方向?yàn)榧す夤鈭稣{(diào)控技術(shù)及應(yīng)用。近五年主持國家重點(diǎn)研發(fā)計(jì)劃、國家自然科學(xué)基金(原創(chuàng)探索計(jì)劃)等科研項(xiàng)目10余項(xiàng)，以第一/通訊作者在Light Sci.Appl.、Adv.Photon.、PhotoniX、Laser Photon. Rev.、Photon. Res.、J. Lightwave Technol..Opt. Lett.、Appl. Phys. Lett.等發(fā)表論文70余篇；近三年受邀在國內(nèi)外高水平學(xué)術(shù)會議上作邀請報(bào)告22次，并擔(dān)任專題共主席、程序委員會委員等；受邀出版學(xué)術(shù)專著2部，獲授權(quán)發(fā)明專利24項(xiàng)。曾獲北京市自然科學(xué)二等獎(第一完成人，2022)、中國電子學(xué)會優(yōu)博(2020)、工信部工信創(chuàng)新特等獎(2018)、中國光學(xué)學(xué)會王大珩光學(xué)獎(2017)等。現(xiàn)為中國光學(xué)學(xué)會激光專委會委員、0ptica Senior Member、中國激光雜志社第三屆青年編輯委員會委員、《光學(xué)學(xué)報(bào)》青年編委、《紅外與激光工程》青編委會執(zhí)行委員會委員等。

3

報(bào)告人：秦華，中國科學(xué)院蘇州納米技術(shù)與納米仿生研究所

時(shí)間：8月26日（周二）14:00

單位：中國科學(xué)院物理研究所

地點(diǎn)：M樓255會議室

摘要：

利用室溫工作的微納電子器件實(shí)現(xiàn)100-1000GHz頻段太赫茲波的高效產(chǎn)生、高效調(diào)制和高靈敏度探測是發(fā)展太赫茲技術(shù)的重要研究課題，太赫茲電子器件一直面臨“頻率-功率-效率”相互制約的瓶頸問題，器件性能與太赫茲雷達(dá)、成像和無線通信等應(yīng)用需求還有數(shù)量級的差距。底層問題在于固體中難以避免的電子非彈性散射。因此，為了實(shí)現(xiàn)高效的太赫茲電子器件，研究人員通常需采用具有高電子遷移率或低載流子壽命的電子材料、納米尺度的器件結(jié)構(gòu)獲得（亞）皮秒量級的電子渡越或光電響應(yīng)時(shí)間，需采用亞波長的天線或諧振器獲得局域增強(qiáng)的太赫茲波與電子相互作用，需利用高濃度電子氣的集體激發(fā)模式（例如等離子體波）獲得電子器件與太赫茲波的共振耦合。兼具高電子氣濃度和高電子遷移率的氮化鎵異質(zhì)結(jié)材料和石墨烯等新型二維材料、具有亞波長特征尺寸和局域場增強(qiáng)特性的太赫茲電磁超表面、先進(jìn)微納電子器件加工手段的發(fā)展為解決上述瓶頸問題提供了新的可能。

報(bào)告將介紹基于AlGaN/GaN異質(zhì)結(jié)的高濃度、高電子遷移率二維電子氣實(shí)現(xiàn)太赫茲波的產(chǎn)生、調(diào)制和探測的研究思路和近期進(jìn)展。研究思路的核心是在二維電子氣的場效應(yīng)器件結(jié)構(gòu)（包括兩端型的肖特基勢壘二極管和三端型的高電子遷移率晶體管）中實(shí)現(xiàn)太赫茲波與二維電子氣高效耦合，利用耦合作用的非線性效應(yīng)實(shí)現(xiàn)太赫茲波的產(chǎn)生、幅度-相位調(diào)制和混頻探測。具體介紹三種核心器件及其應(yīng)用，包括：（1）利用電壓調(diào)控的二維電子氣肖特基勢壘電容特性，構(gòu)造太赫茲非線性傳輸線，將輸入的單一頻率微波信號轉(zhuǎn)換成頻率梳信號，形成結(jié)構(gòu)簡單的太赫茲頻譜分析和矢量網(wǎng)絡(luò)測試系統(tǒng)；（2）同樣，利用二維電子氣的肖特基勢壘電容特性，將肖特基勢壘二極管與亞波長超表面諧振單元融合，實(shí)現(xiàn)精確的相位調(diào)制、高速響應(yīng)、大角度掃描、并且損耗較低，構(gòu)造可用于太赫茲波束掃描的無源相控陣芯片；（3）利用天線耦合的二維電子氣場效應(yīng)晶體管實(shí)現(xiàn)太赫茲波對電子漂移速度和濃度的聯(lián)合調(diào)制，對太赫茲波進(jìn)行高靈敏度的自混頻探測或外差探測，并實(shí)現(xiàn)陣列化的成像傳感器和相控陣探測芯片。

報(bào)告人簡介：

秦華博士1994年畢業(yè)于南京大學(xué)物理系，2001年獲慕尼黑大學(xué)實(shí)驗(yàn)物理博士學(xué)位，2002-2007年期間在劍橋大學(xué)和威斯康辛大學(xué)開展博士后研究工作，現(xiàn)為中國科學(xué)院蘇州納米所研究員，納米器件研究部主任，中國科學(xué)技術(shù)大學(xué)博士生導(dǎo)師，上?？萍即髮W(xué)校外特聘教授。研究方向?yàn)榘雽?dǎo)體毫米波太赫茲器件與應(yīng)用，具體面向太赫茲通信、成像和雷達(dá)感知等應(yīng)用對核心器件的需求，聚焦高遷移率二維電子氣與太赫茲波的耦合作用、GaN基二維電子氣太赫茲器件的難點(diǎn)問題，發(fā)展太赫茲波信號源、調(diào)制器與探測器及其單片集成技術(shù)。研制了太赫茲探測器及成像傳感器、無源相控陣和非線性傳輸線頻率梳等核心器件，其中“太赫茲混頻探測器”入選中國科學(xué)院自主研制科學(xué)儀器目錄，應(yīng)用于EAST托卡馬克和我國第一臺太赫茲自由電子激光等重大科學(xué)基礎(chǔ)設(shè)施，相關(guān)成果獲2021年度江蘇省科學(xué)技術(shù)二等獎。

4

報(bào)告：Prof. Lu Wang，F(xiàn)udan University

時(shí)間：8月27日（周三）14:00

單位：中國科學(xué)院物理研究所

地點(diǎn)：A樓BII段412會議室

摘要：

Live-cell fluorescence nanoscopy has revolutionized the study of cellular biology at the molecular level. However, the limited availability of appropriate fluorophores, which often exhibit poor cell permeability and produce nonspecific background signals, has hampered the widespread use of this technique. We present a strategy to convert rhodamines’ carboxyl group into an electron-deficient amide, preserving spectral properties while tuning the equilibrium between a fluorescent zwitterion and a non-fluorescent, cell-permeable spirolactam. Binding to cellular targets shifts the equilibrium toward the fluorescent form, yielding up to 1,000-fold signal enhancement. These cell-permeable, fluorogenic probes, spanning colors from green to near-infrared, enable wash-free super-resolution imaging of microtubules, F-actin, HaloTag, SNAP-tag, DNA, RNA, and lysosomes in live cells. To address photobleaching in covalently tethered protein tags, we engineered a regenerative TMP-tag (ReTMP; L28Q, R44L, H45Q) with highly fluorogenic ligands, enabling rapid reversible labeling within 1 min and ~90% fluorescence recovery after five bleach cycles. Optimized ligands achieved a 212-fold signal-to-noise ratio in wash-free live-cell imaging. This system supports >300-frame STED imaging of mitochondrial TOM20 at 80 nm resolution over 100 min and enhances long-term single-molecule tracking of membrane proteins, enabling extended, high-contrast visualization of cellular dynamics.

報(bào)告人簡介：

Dr. Lu Wang got his Bachelor degree in China Pharmaceutical University (2006-2010) and Master degree in Fudan University (2010-2013). From 2013 to 2017, Dr. Lu Wang finished his Ph. D. program in National University of Singapore under the supervision of Prof. Young-tae Chang. Later, he started his post-doc research work with the support from Humboldt Fellowship in Max-Planck Institute under the guidance of Prof. Kai Johnsson. Since June 2021, Dr. Lu Wang joined the School of Pharmacy, Fudan University as a youth principle investigator with the support from the Overseas Young High-Level Talent Recruitment Programs. His research interests mainly focus on the molecular imaging and chemical biology, especially on the design and synthesis of fluorescent probes for bioimaging and biosensing. Till now, he has published more than 30 SCI papers in top journals, including Nat. Chem., Nat. Comm. J. Am. Chem. Soc, Angew. Chem. (total citation: 3700, h-index: 26).

5

報(bào)告人：賈新宇，北京大學(xué)

時(shí)間：8月28日（周四）10:00

單位：中國科學(xué)院物理研究所

地點(diǎn)：M236會議室

摘要：

大規(guī)模糾纏態(tài)的制備是量子計(jì)算、通信和計(jì)量等量子技術(shù)的核心挑戰(zhàn)。集成量子光子學(xué)為實(shí)現(xiàn)片上量子光態(tài)的編碼、處理與探測提供了理想平臺，我們近期在集成光學(xué)芯片上成功制備了確定性八模連續(xù)變量糾纏態(tài)、并發(fā)展了集成平臺上一系列連續(xù)變量量子處理器件，驗(yàn)證了連續(xù)變量集成光子器件在量子計(jì)算、網(wǎng)絡(luò)與傳感領(lǐng)域的重要應(yīng)用潛力。

報(bào)告人簡介：

賈新宇博士分別于2020年獲得南開大學(xué)學(xué)士學(xué)位，2025年獲得北京大學(xué)博士學(xué)位，2025年始在北京大學(xué)物理學(xué)院開展博士后研究，合作導(dǎo)師為王劍威教授。近五年來以第一作者身份在Nature上發(fā)表相關(guān)論文1篇，以共同作者身份在Nature Photonics、Nature Materials、Nature Electronics等國際知名期刊發(fā)表相關(guān)論文多篇。

6

報(bào)告人：梁師翎，Center for Systems Biology Dresden

時(shí)間：8月28日（周四）10:30

單位：中國科學(xué)院理論物理研究所

地點(diǎn)：南樓6620

7

報(bào)告人：Sebastien Renaux-Petel，Institut d'astrophysique de Paris

時(shí)間：8月29日（周五）10:30

單位：中國科學(xué)院理論物理研究所

地點(diǎn)：南樓6620

摘要：

Models of inflation relevant for small-scale gravitational-wave cosmology are often characterized by a high degree of inhomogeneity that requires going beyond perturbation theory. In this context, I will describe the simulations we have developed and applied to resonant inflation and ultra-slow-roll inflation, highlighting backreaction and non-Gaussian effects as well as consequences for primordial black holes.

報(bào)告人簡介：

Sebastien Renaux-Petel is a theoretical physicist specialized in primordial cosmology. He is a senior CNRS researcher at the Institut d'astrophysique de Paris and a professor at Ecole polytechnique. He held postdoctoral positions at Cambridge and Sorbonne University and he is the recipient of an ERC Starting Grant and of the CNRS bronze medal.

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報(bào)告人：趙琦，香港大學(xué)

時(shí)間：8月30日（周六）14:00

單位：中國科學(xué)院理論物理研究所

地點(diǎn)：南樓6620

摘要：

Quantum entanglement is an essential feature of many-body systems that impacts both quantum information processing and fundamental physics. The growth of entanglement is a major challenge for classical simulation methods. In our recent work [Nature Physics 21, 1338–1345 (2025), QIP 25], we investigate the relationship between quantum entanglement and quantum simulation, showing that product-formula approximations can perform better for entangled systems, tending to the average-performance [PRL 129 (27), 270502, QIP 22]. We establish a tighter upper bound for algorithmic error in terms of entanglement entropy and develop an adaptive simulation algorithm incorporating measurement gadgets to estimate the algorithmic error. This shows that entanglement is not only an obstacle to classical simulation, but also a feature that can accelerate quantum simulation algorithms. We also explored the further improvement based on the observables in quantum simulation tasks [Communications Physics 25, arXiv:2506.23345]. These results greatly reduce the resource requirements in quantum simulation tasks, promoting the future implementation and application of quantum simulation algorithms.

報(bào)告人簡介：

Prof. Qi Zhao is an Assistant Professor in the Department of Computer Science, the University of Hong Kong (HKU). In 2024, he was recognized as one of the MIT Technology Review “Innovators Under 35” for the Asia Pacific Region. His research interests include quantum simulation, quantum computing, quantum information, and entanglement detection. He obtained a Bachelor’s and Doctoral degree from Tsinghua University in 2014 and 2018 respectively. He was a postdoctoral researcher at the University of Science and Technology of China in 2019. He was a Hartree Postdoctoral Fellow at the University of Maryland in the United States before joining HKU as Assistant Professor in 2022. He has published 46 journal articles, including Nature, Nature Physics, PRL, PRX, npj Quantum Information, PNAS, and IEEE TIT. His works have also been presented as contributed talks at important conferences in quantum information theory, such as QIP, AQIS, TQC, and QCrypt.

9

報(bào)告人：李岳，中國科學(xué)技術(shù)大學(xué)

時(shí)間：9月1日（下周一）10:00

單位：昇思MindSpore Quantum Special Interest Group

鏈接：

摘要：

基于離子阱的開放量子系統(tǒng)實(shí)驗(yàn)研究與環(huán)境的相互作用是所有量子系統(tǒng)普遍要面對的問題。在耗散環(huán)境中高效制備量子糾纏資源,對于推進(jìn)量子模擬、精密測量和基礎(chǔ)量子研究具有關(guān)鍵意義。傳統(tǒng)實(shí)驗(yàn)中，往往致力于抑制耗散導(dǎo)致的退相干效應(yīng)。而本研究中，我們將可控耗散轉(zhuǎn)化為建設(shè)性資源，通過對耗散通道的調(diào)控，提出了一種在捕獲離子的振動模式中產(chǎn)生可編程多模糾纏態(tài)的方法，而且該方法對系統(tǒng)初始狀態(tài)的制備無嚴(yán)苛要求。實(shí)驗(yàn)中，我們通過精確調(diào)控振動模式與自旋耗散通道的耦合，成功地從初始熱態(tài)出發(fā)，制備出包含 2 個(gè)、3 個(gè)及 5 個(gè)模式的多模壓縮態(tài)。并采用 van Lock-Furusawa 不可分性判據(jù)驗(yàn)證表明，所制備的量子態(tài)均為真多體糾纏態(tài)。該研究不僅建立了利用量子諧振子產(chǎn)生糾纏非經(jīng)典態(tài)的普適性路徑，更為連續(xù)變量量子系統(tǒng)中的量子信息處理提供了全新的實(shí)驗(yàn)路徑。除此以外，對耗散通道的創(chuàng)新性利用，為我們的研究拓展了更廣闊的空間，可支撐我們開展對非線性諧振子等新奇物理現(xiàn)象量子模擬研究，也允許我們實(shí)現(xiàn)了邏輯比特的自動糾錯(cuò)實(shí)驗(yàn)。

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