1

報(bào)告人：肖運(yùn)龍，Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore

時(shí)間：4月14日（周二）10:00

單位：中國(guó)科學(xué)院理論物理研究所

騰訊會(huì)議： 961-563-179

會(huì)議密碼：0414

蔻享直播：

摘要:

Quantum channels function as the operational primitives of quantum theory, while superchannels describe the most general transformations acting upon them. Yet the prevailing framework for superchannels is both internally inconsistent, owing to the coexistence of distinct Choi operator constructions, and structurally incomplete, lacking the analogue of representations that ground channel theory. We resolve these issues by combining tensor-network methods with a generalized Occam's razor introduced here, establishing a unified foundation for superchannels. Our framework establishes the connections between competing Choi formulations, develops the Kraus, Stinespring, and Liouville representations for superchannels, and provides a simplified derivation of the realization theorem that identifies the minimal memory required to implement a given transformation. These structural tools also enable characterizations of superchannels that destroy quantum correlations or causal structure, opening a systematic route to non-Markovian quantum dynamics.

報(bào)告人簡(jiǎn)介:

Yunlong Xiao earned his Ph.D. in Mathematical Physics from the Max Planck Institute for Mathematics in the Sciences (MiS) in Leipzig, Germany, and a second Ph.D. in Pure Mathematics from South China University of Technology. He subsequently held a Postdoctoral Fellowship at the Institute for Quantum Science and Technology at the University of Calgary until August 2019, followed by a Research Fellowship at the Quantum Hub in the School of Physical and Mathematical Sciences at Nanyang Technological University, Singapore. He is now a Senior Scientist at the Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore. His research spans quantum foundations, quantum causal inference, quantum resource theory, and quantum communication, with publications in Physical Review Letters, Physical Review Research, Physical Review D, Light: Science & Applications, npj Quantum Information, Communications Physics, Quantum Science and Technology, and New Journal of Physics. His broader impact includes long talks and contributed talks at major international venues such as APS March Meeting, AQIS, QPL, and QIP.

2

報(bào)告人：李海峰，山東大學(xué)前沿交叉科學(xué)青島研究院

時(shí)間：4月14日（周二）10:30

單位：清華大學(xué)物理系

地點(diǎn)：物理樓W260

摘要:

In this talk, I will review the recent toponium results from the ATLAS experiment at the Large Hadron Collider. An excess of events is observed over the baseline pQCD prediction, with an observed significance of 8σ. This excess is consistent with the formation of color-singlet, S-wave, quasi-bound tˉt states as predicted by non-relativistic QCD, and corresponds to a measured cross-section of 9.0±1.3pb.

報(bào)告人簡(jiǎn)介:

李海峰，山東大學(xué)前沿交叉科學(xué)青島研究院教授。2005年在山東大學(xué)獲得本科學(xué)位。2008-2012年，作為聯(lián)合培養(yǎng)博士研究生在美國(guó)威斯康星大學(xué)從事ATLAS實(shí)驗(yàn)研究。2012年在山東大學(xué)獲得理學(xué)博士學(xué)位。2012-2017年，在美國(guó)紐約州立大學(xué)石溪分校從事博士后研究工作。2017年9月到山東大學(xué)工作。主要研究?jī)?nèi)容以及成果：在Higgs粒子發(fā)現(xiàn)時(shí)期（2011-2012年）作為Higgs到雙W道的主要分析者之一；是Higgs到雙繆子的創(chuàng)始者之一，曾擔(dān)任該分析團(tuán)隊(duì)的負(fù)責(zé)人；開(kāi)展了頂夸克偶素的研究。

3

報(bào)告人：Mohammad Bahrami，Wolfram Research Inc

時(shí)間：4月15日（周三）10:00

單位：中國(guó)科學(xué)院理論物理研究所

地點(diǎn)：南樓6620

摘要:

Wolfram 技術(shù)（例如 Mathematica、Wolfram 語(yǔ)言、Wolfram Alpha、Wolfram GPT 等）擁有強(qiáng)大的計(jì)算、建模、數(shù)據(jù)分析與可視化能力。Wolfram 除了為一代又一代的科學(xué)家和學(xué)生提供軟件之外，Wolfram 的技術(shù)長(zhǎng)期以來(lái)也是各類智能助手及其他 AI 系統(tǒng)的核心組件，為研發(fā)、教育、企業(yè)應(yīng)用及消費(fèi)者應(yīng)用領(lǐng)域提供強(qiáng)有力的工具支持。

Wolfram 量子框架是一套用于量子電路模擬與算法設(shè)計(jì)的集成工具，依托 Wolfram 語(yǔ)言強(qiáng)大的數(shù)值與符號(hào)計(jì)算能力，提供一個(gè)跨平臺(tái)、端到端的統(tǒng)一的且不依賴任何特定硬件提供商的量子研究環(huán)境，并支持在 Qiskit、Amazon Braket 等平臺(tái)上的無(wú)縫運(yùn)行，同時(shí)可與現(xiàn)有的 Python、C 或其他語(yǔ)言協(xié)同工作。

講座將通過(guò)一系列案例，旨在突顯 Wolfram 語(yǔ)言如何助力學(xué)生高效理解科學(xué)概念，研究人員高效實(shí)現(xiàn)從理論到實(shí)踐的轉(zhuǎn)化；如何支持可復(fù)現(xiàn)且可審計(jì)的工作流（這對(duì)政府資助的研究項(xiàng)目尤為重要）；以及如何與現(xiàn)有的高性能計(jì)算（HPC）、人工智能（AI）及大數(shù)據(jù)處理技術(shù)相融合。通過(guò)量子算法、量子誤差緩解、材料科學(xué)及優(yōu)化領(lǐng)域的具體例子，充分展示該框架如何在加速國(guó)家級(jí)科研項(xiàng)目進(jìn)程的同時(shí)，有效緩解工具碎片化問(wèn)題，并降低長(zhǎng)期的基礎(chǔ)設(shè)施運(yùn)營(yíng)成本，加速關(guān)鍵技術(shù)突破。

報(bào)告人簡(jiǎn)介:

Mohammad Bahrami博士（穆罕默德?巴赫拉米）擁有謝里夫理工大學(xué)的物理化學(xué)博士學(xué)位。在加入 Wolfram Research 之前，他曾在阿卜杜勒?薩拉姆國(guó)際理論物理中心、加州大學(xué)河濱分校等國(guó)際頂尖機(jī)構(gòu)從事量子理論及其應(yīng)用研究。他的專長(zhǎng)涵蓋量子建模與仿真的基礎(chǔ)理論，以及開(kāi)發(fā)用于描述真實(shí)環(huán)境中量子系統(tǒng)的計(jì)算工具。憑借在面向?qū)W術(shù)界和普通受眾講授高級(jí)課題方面的豐富經(jīng)驗(yàn)，他目前領(lǐng)導(dǎo) Wolfram 的量子計(jì)劃，包括 Wolfram 量子框架的開(kāi)發(fā)。

4

報(bào)告人：徐曄，北京航空航天大學(xué)機(jī)械工程及自動(dòng)化學(xué)院 北京航空航天大學(xué)中西智能學(xué)院

時(shí)間：4月15日（周三）10:00

單位：中國(guó)科學(xué)院物理研究所

地點(diǎn)： M樓253會(huì)議室

摘要:

軟物質(zhì)與生命物質(zhì)中力學(xué)信號(hào)在結(jié)構(gòu)調(diào)控、信息傳遞及功能實(shí)現(xiàn)中的作用受到越來(lái)越多關(guān)注。不同于傳統(tǒng)硬質(zhì)材料，這類體系通常具有高度非均勻的介觀結(jié)構(gòu)和顯著的時(shí)空演化特征，其物理力學(xué)行為深刻影響細(xì)胞行為、生物功能以及宏觀結(jié)構(gòu)響應(yīng)。本報(bào)告第一部分將介紹我們近年來(lái)發(fā)展的一系列基于熒光共聚焦成像與單顆粒追蹤的微細(xì)觀實(shí)驗(yàn)力學(xué)表征方法。通過(guò)在軟物質(zhì)與三維生物微環(huán)境中引入示蹤顆粒，并結(jié)合原位力學(xué)加載與溫度場(chǎng)的精確控制，實(shí)現(xiàn)了對(duì)局部形變場(chǎng)及力學(xué)信號(hào)傳遞過(guò)程的高分辨定量測(cè)量。相關(guān)研究揭示了腫瘤細(xì)胞與免疫細(xì)胞之間通過(guò)細(xì)胞外基質(zhì)介導(dǎo)的力學(xué)交互機(jī)制，闡明了力學(xué)線索在免疫細(xì)胞定向遷移和功能調(diào)控中的生物物理作用；同時(shí)，通過(guò)對(duì)水凝膠冷凍結(jié)冰過(guò)程的原位觀測(cè)，解析了冰晶生長(zhǎng)誘導(dǎo)局部脫水與聚合物網(wǎng)絡(luò)損傷的微觀力學(xué)本質(zhì)。報(bào)告第二部分將聚焦于基于水凝膠軟物質(zhì)的復(fù)合結(jié)構(gòu)設(shè)計(jì)。通過(guò)力學(xué)超材料結(jié)構(gòu)設(shè)計(jì)，構(gòu)建具有可編程力學(xué)響應(yīng)的軟硬相復(fù)合體系以及具有剪紙結(jié)構(gòu)的復(fù)雜曲面共形包覆結(jié)構(gòu)，并探索其在生物電子器件中的應(yīng)用。

報(bào)告人簡(jiǎn)介:

徐曄，北京航空航天大學(xué)機(jī)械工程及自動(dòng)化學(xué)院教授、國(guó)家級(jí)青年人才，現(xiàn)任北航中西智能學(xué)院院長(zhǎng)。2012年畢業(yè)于美國(guó)耶魯大學(xué)機(jī)械工程及材料科學(xué)系，獲工程與應(yīng)用科學(xué)博士學(xué)位，之后分別在美國(guó)賓夕法尼亞大學(xué)物質(zhì)結(jié)構(gòu)研究中心及美國(guó)?？松梨谑凸荆‥xxonMobil）集團(tuán)戰(zhàn)略研究院工程物理實(shí)驗(yàn)室從事研究工作。2017年回國(guó)工作后組建了軟物質(zhì)與柔性微納材料實(shí)驗(yàn)室，目前主要研究方向包括軟物質(zhì)與生物物理力學(xué)、智能軟物質(zhì)超材料、微流控系統(tǒng)等，主持多項(xiàng)國(guó)家自然科學(xué)基金項(xiàng)目及國(guó)家科技重大專項(xiàng)課題，以第一作者或通訊作者在Cell、Science Advances、PNAS、Advanced Functional Materials、Research、Nanoscale, Soft Matter等國(guó)際頂級(jí)期刊發(fā)表學(xué)術(shù)論文50余篇。

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報(bào)告人：李軍，燕山大學(xué)

時(shí)間：4月15日（周三）15:00

單位：中國(guó)科學(xué)院物理研究所

地點(diǎn)： 懷柔園區(qū)MA樓505會(huì)議室

騰訊會(huì)議：464-294-298

摘要:

超導(dǎo)材料的超導(dǎo)轉(zhuǎn)變溫度（Tc）與其電子能帶結(jié)構(gòu)密切相關(guān)，但長(zhǎng)期以來(lái)缺乏系統(tǒng)化的高質(zhì)量能帶數(shù)據(jù)庫(kù)，限制了數(shù)據(jù)驅(qū)動(dòng)方法在超導(dǎo)研究中的應(yīng)用。本報(bào)告首先介紹我們構(gòu)建的SuperBand數(shù)據(jù)庫(kù)，一個(gè)專注于超導(dǎo)體的電子能帶與費(fèi)米面結(jié)構(gòu)數(shù)據(jù)庫(kù)。該數(shù)據(jù)庫(kù)整合了6,780種實(shí)驗(yàn)確認(rèn)的超導(dǎo)材料以及1,780種實(shí)驗(yàn)驗(yàn)證的非超導(dǎo)材料。通過(guò)對(duì)無(wú)序結(jié)構(gòu)的有序化處理、摻雜體系的超胞擴(kuò)展及能帶數(shù)據(jù)的標(biāo)準(zhǔn)化，SuperBand提供了統(tǒng)一的能帶結(jié)構(gòu)、態(tài)密度和費(fèi)米面數(shù)據(jù)，可直接用于機(jī)器學(xué)習(xí)建模。在此基礎(chǔ)上，我們發(fā)展了DeeperBand，一個(gè)基于Transformer的深度學(xué)習(xí)模型，以嘗試從三維電子能帶結(jié)構(gòu)預(yù)測(cè)Tc。模型采用對(duì)稱性保持的數(shù)據(jù)增強(qiáng)策略，在測(cè)試當(dāng)中得到了很高的精確度，并在26種訓(xùn)練后新發(fā)現(xiàn)的超導(dǎo)體上驗(yàn)證了泛化能力。我們也嘗試用神經(jīng)網(wǎng)絡(luò)中的注意力機(jī)制尋找與超導(dǎo)密切相關(guān)的能帶特征，并篩選了多個(gè)可能具備較高Tc的候選材料。本工作展示了大型電子能帶數(shù)據(jù)庫(kù)與深度學(xué)習(xí)融合在超導(dǎo)研究中的巨大潛力。

報(bào)告人簡(jiǎn)介:

李軍，博士。于2015年在中國(guó)科學(xué)院物理研究所獲得理學(xué)博士學(xué)位，后于2018年在中山大學(xué)物理學(xué)院擔(dān)任專職副研究員。在2020年就職于燕山大學(xué)理學(xué)院并開(kāi)展獨(dú)立研究工作。主要研究興趣包括經(jīng)典與量子系統(tǒng)的磁性動(dòng)力學(xué)算法開(kāi)發(fā)，第一性原理計(jì)算與超導(dǎo)理論研究，以及人工智能與凝聚態(tài)物理的交叉探索等。

6

報(bào)告人：Haibo Yu，University of California

時(shí)間：4月15日（周三）15:30

單位：北京大學(xué)物理學(xué)院

地點(diǎn)： KIAA-auditorium

摘要:

Dark matter makes up most of the matter in the Universe, yet its fundamental nature remains unknown. In this talk, I will present recent high-resolution N-body simulations of self-interacting dark matter and discuss their implications for a wide range of astrophysical observations. I will highlight new signatures associated with gravothermal collapse in dark matter halos and show how they may be detected through observations of strong gravitational lensing, stellar streams, and supermassive black holes, including the JWST Little Red Dots. These studies open new avenues for uncovering the particle physics of dark matter.

報(bào)告人簡(jiǎn)介:

Hai-Bo Yu is a Full Professor in the Department of Physics and Astronomy at the University of California, Riverside, and Deputy Director of the Center for Experimental Cosmology and Instrumentation. He received his Ph.D. from the University of Maryland in 2007 and held postdoctoral positions at the University of California, Irvine and the University of Michigan. His research lies at the interface of particle physics and astrophysics, focusing on probing new physics through astronomical observations. His work includes self-interacting dark matter, small-scale structure formation, and supermassive black holes. In recent years, he has shown that self-interacting dark matter can produce diverse halo structures from dwarf galaxies to galaxy clusters, offering an alternative to challenges faced by the standard cold dark matter paradigm. He has authored nearly 100 publications with over 14,000 citations.

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報(bào)告人：Atac Imamoglu, ETH Zurich

時(shí)間：4月16日（周四）14:00

單位：清華大學(xué)物理系

地點(diǎn)：物理樓W101

摘要:

Two dimensional semiconductors subject to a moire potential provide a fertile ground for exploration of strongly correlated phases, ranging from kinetic magnetism, through fractional Chern insulators to unconventional superconductivity. In the first set of experiments, we studied topologically trivial moire bands with vanishing exchange interactions; here we observed ferromagnetic correlations stemming from a kinetic mechanism. The focus of the second set of experiments was on interplay between interactions and topology in twisted MoTe2 homobilayer. In this system, we demonstrated optical control of ferromagnetism in general and topological Chern insulator states in particular.

報(bào)告人簡(jiǎn)介:

Atac Imamoglu received his Ph.D. from Stanford University in 1991. From 1993 till 2002, he was a faculty member at University of California at Santa Barbara. Since 2002, he is a professor of physics at ETH Zurich and leads the quantum photonics group. His research interests range from quantum optics to strongly correlated electrons and excitons in two dimensional materials. He is an elected fellow of APS and Optica, and Academia Europea.

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報(bào)告人：劉春森，復(fù)旦大學(xué)

時(shí)間：4月16日（周四）15:00

單位：北京大學(xué)物理學(xué)院

地點(diǎn)：物理大樓中212報(bào)告廳

摘要:

在人工智能飛速發(fā)展的背景下，信息存取速度決定算力上限，而非易失存儲(chǔ)技術(shù)則是實(shí)現(xiàn)超低功耗的關(guān)鍵。信息的非易失存取速度極限已然成為集成電路領(lǐng)域最為關(guān)鍵的基礎(chǔ)科學(xué)問(wèn)題。目前易失性存儲(chǔ)（斷電后數(shù)據(jù)會(huì)丟失）速度接近計(jì)算，代表了當(dāng)今信息存取速度的最高水平。與之相比，以閃存（flash）為代表的非易失性存儲(chǔ)雖然具備極低功耗優(yōu)勢(shì)，其電場(chǎng)輔助編程速度卻遠(yuǎn)低于晶體管開(kāi)關(guān)。本報(bào)告重點(diǎn)介紹通過(guò)二維半導(dǎo)體將電荷非易失存儲(chǔ)速度提升至晶體管開(kāi)關(guān)水平，重新定義現(xiàn)有存儲(chǔ)技術(shù)邊界；報(bào)告進(jìn)一步討論如何攻克新型二維信息器件工程化難題，實(shí)現(xiàn)二維-硅基混合架構(gòu)閃存芯片。

報(bào)告人簡(jiǎn)介:

劉春森，青年研究員，博導(dǎo)。吉林大學(xué)微電子學(xué)學(xué)士，復(fù)旦大學(xué)微電子學(xué)與固體電子學(xué)博士，現(xiàn)任職于復(fù)旦大學(xué)集成電路與微納電子創(chuàng)新學(xué)院。研究方向?yàn)樾滦投S存儲(chǔ)器件與系統(tǒng)集成。主持科技部重點(diǎn)研發(fā)（首席科學(xué)家）、自然基金委面上和上海市科委基礎(chǔ)特區(qū)計(jì)劃（首批）等項(xiàng)目，曾獲國(guó)家自然基金委優(yōu)青、教育部U40和麻省理工科技評(píng)論“35歲以下科技創(chuàng)新35人（亞太區(qū)）”等榮譽(yù)。以第一作者和通訊作者發(fā)表論文30余篇，包括Nature（2篇）、Nature Nanotechnology（6篇）、Nature materials、Nature Electronics和IEDM等頂級(jí)期刊/會(huì)議論文。

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報(bào)告人：Barry C Barish

時(shí)間：4月16日（周四）16:00

單位：清華大學(xué)物理系

地點(diǎn)：物理樓W101

摘要:

The discovery of gravitational waves was reported from the Laser Interferometer Gravitational-wave Observatory (LIGO) one hundred years after they had been predicted by Albert Einstein in 1916. The first detection was of the merger of a pair of binary black holes from two widely separated suspended-mass interferometers that had unprecedented sensitivity to the distortions of space-time of less than 1 part in 1021. Today, I report on that discovery and the ten years of gravitational waves science that have followed.

報(bào)告人簡(jiǎn)介:

Barry Barish is a distinguished American physicist and recipient of the 2017 Nobel Prize in Physics for his leadership in the Laser Interferometer Gravitational-Wave Observatory (LIGO) and his pivotal role in the first direct detection of gravitational waves. He is Professor Emeritus at the California Institute of Technology and has been affiliated with the University of California, Riverside since 2018 and Stony Brook University since 2023. Professor Barish has made long-standing contributions to experimental high-energy physics and gravitational-wave science. He served as Principal Investigator and later Director of LIGO, playing a central role in achieving the breakthrough discovery of gravitational waves in 2015. He also led the Global Design Effort for the International Linear Collider (ILC) and has held leadership positions on numerous major international scientific advisory committees. His many honors include the Nobel Prize and the U.S. National Medal of Science.

封面圖片來(lái)源：

http://news.cjn.cn/gnxw/201904/t3390930.htm

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