报告摘要：　　Significant advances have been made in fundamental research of topological insulators (TIs), yet their device applications remain elusive. We propose an approach towa...

Abstract：　　For semiconductors in molecular optronics, photoinduced dynamics of excitons and free-carriers (electrons and holes) such as exciton-dissociation and carrier-recombinat...

Abstract：　　In this talk I will discuss a series of insights into non-equilibrium phenomena involving the orbital angular momentum (OAM) of Bloch electron systems. Recent years hav...

报告摘要：　　In this talk, I will overview the developments in the field of magnetic topological insulators (MTIs) that led to the discovery of the intrinsic MTIs of the MnBi2Te4family that attracts a great deal of attention nowadays

报告摘要：　　冷原子操控及光梳技术的发展促进了光钟技术进步，光钟的频率稳定度比现行铯原子喷泉钟高2个数量级，将显著提升时间基准的精度，推动导航、通信、基础物理研究等领域的变革。美国JILA研制的锶光晶格钟和NIST的铝离子光钟以及中科院精测院的钙离子光钟不确定度都进入E-19的量级。为应对秒定义变革，中国计量科学研究院开展了锶光晶格钟和镱离子光钟的研究。锶光钟的不确定度已达到2.7E-18，镱离子光钟3.5E-18，分时自比对频率稳定度进入E-1...

Abstract： Materials modeling with atomistic simulation has become an indispensable tool in computational materials science, enabling precise property predictions and mechanistic insights across a wide range of chemical and structural environments. While recent advancements in artificial intelligence (AI)-assisted techniques, such as machine learning interatomic potentials (MLIPs) trained on extensive databases (e...

报告摘要：　　As is well known, phonons play a crucial role in governing thermal and electrical transport in both insulators and metals. In this talk, I will present phonon-controlled phenomena in correlated quantum materials. First, I will discuss the interplay between nonlocal electron-phonon interactions and electron-electron correlations in cuprate superconductors. Our findings suggest that the nonlocal electron-...

Abstract:　　It is well known that a molecule is made of two types of charged particles, i.e. electrons and nuclei. These charged particles are not at rest but are moving, in a molecule, even at the absolute zero temperature. One may therefore expect that the origin of various molecular properties such as reactivity and biological activity can be traced back to the electron and nuclear motions and their changes. Such...

报告摘要：　　在复杂化学体系中，能够在原子水平上精确模拟长时间的动力学演化对于理解体系的结构和功能规律至关重要。为实现复杂化学体系的高精度高效率计算模拟，报告人近年来致力于深度学习势能模型的开发与应用，在法、数据和软件三方面取得了创新成果:引入物理模型和迁移学习，开发了DPRc和QDn模型，有效提升了模型精度和泛化性;结合主动学习，构建了高质量数据集，解决了领域数据售乏问题;开发了DeePMD-kit系列软件，实现了软件易用性的大幅提升...

报告摘要：　　在分子互作领域，基于瞬态吸收的无标记微尺度热泳（MST）技术被提出：利用深紫外泵浦光激发蛋白质的紫外吸收特性，通过瞬态吸收信号定量分析温度梯度下分子热泳迁移行为，规避传统荧光标记对分子构象的干扰，实现溶液中蛋白质 - 配体亲和性的高灵敏（微摩尔级）、低样本量无标记检测，为膜蛋白互作及低丰度生物标志物筛选提供新方法。　　在组织成像领域，受激拉曼散射技术（SRS）通过双光束频率差匹配生物分子振动能级，实现无标记、化...

报告介绍 报告摘要：　　The strongly correlated problem in many body physics can be mapped to a weak interacting problem with gauge symmetry. The essential issue for this gauge theory is how to find a gauge fixing condition which is consistent with the local constraint in the strongly correlated system. This was failed in previous studies of the gauge theory. Recently, we developed a consistent gauge theory i...

报告介绍 报告摘要：　　Random flux is an important type of disorder which has deep connections to many fundamental phenomena such as the fractional quantum Hall effect. However, its impact on topological states of matter has remained largely elusive. In this talk, I will first discuss how will disorder drive higher-order topological nontrivial phases, i.e., higher-order topological Anderson insulators[1]. Th...

报告介绍 报告摘要：　　光合作用捕光系统中，色素间的相互作用往往比较强，共享分子轨道；激发其中任何一个色素，它的激发态都会发生离域，形成这些色素分子激发态的叠加，即相干叠加态。如果光合系统存在有效的量子相干态传能机制，那么量子相干态的寿命必须和传能时间相匹配才能发挥作用。报告介绍课题组近年在光合作用原初过程量子生物学方面的工作。首先介绍高等植物捕光天线LHCII如何响应环境光强变化、通过蛋白质动态结调控高效捕光和...

报告介绍 Abstract:　　Nonlinear response properties of solids have attracted tremendous interest recently. So far, the studies of nonlinear responses are mostly focused on the charge current, whereas the importance of nonlinear response of spin, another basic degree of freedom in solids, has not been widely appreciated. In this talk I will introduce our recent works on the 2nd order nonlinear electrical spin...

报告介绍 Abstract:　　Driven-dissipative physics lie at the core of quantum optics, but the full interplay between a driven quantum many-body system and its environment remains relatively unexplored in the solid-state realm. In this talk, based on the specific example of a driven superconductor, we investigate from a theoretical perspective the breakdown of the Lindblad formalism due to the invalidity of rot...

报告介绍 报告摘要：　　电子-声子耦合（EPC）是凝聚态物质中重要的多体相互作用，对体系物理性质的形成往往起到关键作用。本报告先以电荷密度波相变为例，讲述在动量空间解析EPC的重要性，然后介绍利用能量/动量二维成像探测的高分辨率电子能量损失谱观测声子色散的实验方法。使用该方法，我们完整描述了界面EPC导致FeSe/SrTiO3体系超导增强的微观图像，并从表面观测到声子丰富多彩的新奇特性。报告人简介：　　郭建东，1996年中国科技大学本...