北京
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報告人：肖運龍，Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore
時間：4月14日（周二）10:00
單位：中國科學院理論物理研究所
騰訊會議： 961-563-179
會議密碼：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.
報告人簡介:
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
報告人：李海峰，山東大學前沿交叉科學青島研究院
時間：4月14日（周二）10:30
單位：清華大學物理系
地點：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.
報告人簡介:
李海峰，山東大學前沿交叉科學青島研究院教授。2005年在山東大學獲得本科學位。2008-2012年，作為聯合培養博士研究生在美國威斯康星大學從事ATLAS實驗研究。2012年在山東大學獲得理學博士學位。2012-2017年，在美國紐約州立大學石溪分校從事博士后研究工作。2017年9月到山東大學工作。主要研究內容以及成果：在Higgs粒子發現時期（2011-2012年）作為Higgs到雙W道的主要分析者之一；是Higgs到雙繆子的創始者之一，曾擔任該分析團隊的負責人；開展了頂夸克偶素的研究。
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報告人：Mohammad Bahrami，Wolfram Research Inc
時間：4月15日（周三）10:00
單位：中國科學院理論物理研究所
地點：南樓6620
摘要:
Wolfram 技術（例如 Mathematica、Wolfram 語言、Wolfram Alpha、Wolfram GPT 等）擁有強大的計算、建模、數據分析與可視化能力。Wolfram 除了為一代又一代的科學家和學生提供軟件之外，Wolfram 的技術長期以來也是各類智能助手及其他 AI 系統的核心組件，為研發、教育、企業應用及消費者應用領域提供強有力的工具支持。
Wolfram 量子框架是一套用于量子電路模擬與算法設計的集成工具，依托 Wolfram 語言強大的數值與符號計算能力，提供一個跨平臺、端到端的統一的且不依賴任何特定硬件提供商的量子研究環境，并支持在 Qiskit、Amazon Braket 等平臺上的無縫運行，同時可與現有的 Python、C 或其他語言協同工作。
講座將通過一系列案例，旨在突顯 Wolfram 語言如何助力學生高效理解科學概念，研究人員高效實現從理論到實踐的轉化；如何支持可復現且可審計的工作流（這對政府資助的研究項目尤為重要）；以及如何與現有的高性能計算（HPC）、人工智能（AI）及大數據處理技術相融合。通過量子算法、量子誤差緩解、材料科學及優化領域的具體例子，充分展示該框架如何在加速國家級科研項目進程的同時，有效緩解工具碎片化問題，并降低長期的基礎設施運營成本，加速關鍵技術突破。
報告人簡介:
Mohammad Bahrami博士（穆罕默德?巴赫拉米）擁有謝里夫理工大學的物理化學博士學位。在加入 Wolfram Research 之前，他曾在阿卜杜勒?薩拉姆國際理論物理中心、加州大學河濱分校等國際頂尖機構從事量子理論及其應用研究。他的專長涵蓋量子建模與仿真的基礎理論，以及開發用于描述真實環境中量子系統的計算工具。憑借在面向學術界和普通受眾講授高級課題方面的豐富經驗，他目前領導 Wolfram 的量子計劃，包括 Wolfram 量子框架的開發。
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報告人：徐曄，北京航空航天大學機械工程及自動化學院 北京航空航天大學中西智能學院
時間：4月15日（周三）10:00
單位：中國科學院物理研究所
地點： M樓253會議室
摘要:
軟物質與生命物質中力學信號在結構調控、信息傳遞及功能實現中的作用受到越來越多關注。不同于傳統硬質材料，這類體系通常具有高度非均勻的介觀結構和顯著的時空演化特征，其物理力學行為深刻影響細胞行為、生物功能以及宏觀結構響應。本報告第一部分將介紹我們近年來發展的一系列基于熒光共聚焦成像與單顆粒追蹤的微細觀實驗力學表征方法。通過在軟物質與三維生物微環境中引入示蹤顆粒，并結合原位力學加載與溫度場的精確控制，實現了對局部形變場及力學信號傳遞過程的高分辨定量測量。相關研究揭示了腫瘤細胞與免疫細胞之間通過細胞外基質介導的力學交互機制，闡明了力學線索在免疫細胞定向遷移和功能調控中的生物物理作用；同時，通過對水凝膠冷凍結冰過程的原位觀測，解析了冰晶生長誘導局部脫水與聚合物網絡損傷的微觀力學本質。報告第二部分將聚焦于基于水凝膠軟物質的復合結構設計。通過力學超材料結構設計，構建具有可編程力學響應的軟硬相復合體系以及具有剪紙結構的復雜曲面共形包覆結構，并探索其在生物電子器件中的應用。
報告人簡介:
徐曄，北京航空航天大學機械工程及自動化學院教授、國家級青年人才，現任北航中西智能學院院長。2012年畢業于美國耶魯大學機械工程及材料科學系，獲工程與應用科學博士學位，之后分別在美國賓夕法尼亞大學物質結構研究中心及美國埃克森美孚石油公司（ExxonMobil）集團戰略研究院工程物理實驗室從事研究工作。2017年回國工作后組建了軟物質與柔性微納材料實驗室，目前主要研究方向包括軟物質與生物物理力學、智能軟物質超材料、微流控系統等，主持多項國家自然科學基金項目及國家科技重大專項課題，以第一作者或通訊作者在Cell、Science Advances、PNAS、Advanced Functional Materials、Research、Nanoscale, Soft Matter等國際頂級期刊發表學術論文50余篇。
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報告人：李軍，燕山大學
時間：4月15日（周三）15:00
單位：中國科學院物理研究所
地點： 懷柔園區MA樓505會議室
騰訊會議：464-294-298
摘要:
超導材料的超導轉變溫度（Tc）與其電子能帶結構密切相關，但長期以來缺乏系統化的高質量能帶數據庫，限制了數據驅動方法在超導研究中的應用。本報告首先介紹我們構建的SuperBand數據庫，一個專注于超導體的電子能帶與費米面結構數據庫。該數據庫整合了6,780種實驗確認的超導材料以及1,780種實驗驗證的非超導材料。通過對無序結構的有序化處理、摻雜體系的超胞擴展及能帶數據的標準化，SuperBand提供了統一的能帶結構、態密度和費米面數據，可直接用于機器學習建模。在此基礎上，我們發展了DeeperBand，一個基于Transformer的深度學習模型，以嘗試從三維電子能帶結構預測Tc。模型采用對稱性保持的數據增強策略，在測試當中得到了很高的精確度，并在26種訓練后新發現的超導體上驗證了泛化能力。我們也嘗試用神經網絡中的注意力機制尋找與超導密切相關的能帶特征，并篩選了多個可能具備較高Tc的候選材料。本工作展示了大型電子能帶數據庫與深度學習融合在超導研究中的巨大潛力。
報告人簡介:
李軍，博士。于2015年在中國科學院物理研究所獲得理學博士學位，后于2018年在中山大學物理學院擔任專職副研究員。在2020年就職于燕山大學理學院并開展獨立研究工作。主要研究興趣包括經典與量子系統的磁性動力學算法開發，第一性原理計算與超導理論研究，以及人工智能與凝聚態物理的交叉探索等。
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報告人：Haibo Yu，University of California
時間：4月15日（周三）15:30
單位：北京大學物理學院
地點： 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.
報告人簡介:
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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報告人：Atac Imamoglu, ETH Zurich
時間：4月16日（周四）14:00
單位：清華大學物理系
地點：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.
報告人簡介:
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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報告人：劉春森，復旦大學
時間：4月16日（周四）15:00
單位：北京大學物理學院
地點：物理大樓中212報告廳
摘要:
在人工智能飛速發展的背景下，信息存取速度決定算力上限，而非易失存儲技術則是實現超低功耗的關鍵。信息的非易失存取速度極限已然成為集成電路領域最為關鍵的基礎科學問題。目前易失性存儲（斷電后數據會丟失）速度接近計算，代表了當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雖然具備極低功耗優勢，其電場輔助編程速度卻遠低于晶體管開關。本報告重點介紹通過二維半導體將電荷非易失存儲速度提升至晶體管開關水平，重新定義現有存儲技術邊界；報告進一步討論如何攻克新型二維信息器件工程化難題，實現二維-硅基混合架構閃存芯片。
報告人簡介:
劉春森，青年研究員，博導。吉林大學微電子學學士，復旦大學微電子學與固體電子學博士，現任職于復旦大學集成電路與微納電子創新學院。研究方向為新型二維存儲器件與系統集成。主持科技部重點研發（首席科學家）、自然基金委面上和上海市科委基礎特區計劃（首批）等項目，曾獲國家自然基金委優青、教育部U40和麻省理工科技評論“35歲以下科技創新35人（亞太區）”等榮譽。以第一作者和通訊作者發表論文30余篇，包括Nature（2篇）、Nature Nanotechnology（6篇）、Nature materials、Nature Electronics和IEDM等頂級期刊/會議論文。
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報告人：Barry C Barish
時間：4月16日（周四）16:00
單位：清華大學物理系
地點：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.
報告人簡介:
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.
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