Publications (76)
CLOP: Video-and-Language Pre-Training with Knowledge Regularizations
Guohao Li, Hu Yang, Feng He +4
Video-and-language pre-training has shown promising results for learning generalizable representations. Most existing approaches usually model video and text in an implicit manner,…
Emergence and disruption of spin-charge separation in one-dimensional repulsive fermions
Feng He, Yu-Zhu Jiang, Hai-Qing Lin +3
At low temperature, collective excitations of one-dimensional (1D) interacting fermions exhibit spin-charge separation, a unique feature predicted by the Tomonaga-Luttinger liquid…
Friend Ranking in Online Games via Pre-training Edge Transformers
Liang Yao, Jiazhen Peng, Shenggong Ji +4
Friend recall is an important way to improve Daily Active Users (DAU) in online games. The problem is to generate a proper lost friend ranking list essentially. Traditional friend…
DeepNC: A Fast GNN-based Pre-Verification Surrogate for TSN Configuration
Jiayi Zhu, Jing Lin, Zelong Tian +2
Time-Sensitive Networking (TSN) is critical to deterministic communication in safety-critical domains, with formal verification such as Network Calculus (NC) serving as the corners…
HG-Lane: High-Fidelity Generation of Lane Scenes under Adverse Weather and Lighting Conditions without Re-annotation
Daichao Zhao, Qiupu Chen, Feng He +2
Lane detection is a crucial task in autonomous driving, as it helps ensure the safe operation of vehicles. However, existing datasets such as CULane and TuSimple contain relatively…
Initialization for Network Embedding: A Graph Partition Approach
Wenqing Lin, Feng He, Faqiang Zhang +2
Network embedding has been intensively studied in the literature and widely used in various applications, such as link prediction and node classification. While previous work focus…
Instantaneous Quasiphoton in Strong-Field Ionization
Yongzhe Ma, Hongcheng Ni, Yang Li +2
Photon is a concept that does not apply at the instantaneous level when light is described by classical electromagnetic fields. Exploiting the dynamical rotational symmetry of circ…
Spectral Decimation of Quantum Many-Body Hamiltonians
Feng He, Arthur Hutsalyuk, Giuseppe Mussardo +1
We develop a systematic theory of spectral decimation for quantum many-body Hamiltonians and show that it provides a quantitative probe of emergent symmetries in statistically mixe…
Ultrafast Ionization Dynamics Encoded in a Photoelectron Spin Torus
Xiaodan Mao, Feng He, Pei-Lun He
We demonstrate that strong-field ionization of atoms in circularly polarized laser fields generates a photoelectron spin texture with toroidal topology in momentum space. Using tim…
Experimental observation of the elusive double-peak structure in R-dependent strong-field ionization rate of H2+
Han Xu, Feng He, D. Kielpinski +2
When a diatomic molecule is ionized by an intense laser field, the ionization rate depends very strongly on the inter-nuclear separation. That dependence exhibits a pronounced maxi…
Implicit Priors Editing in Stable Diffusion via Targeted Token Adjustment
Feng He, Chao Zhang, Zhixue Zhao
Implicit assumptions and priors are often necessary in text-to-image generation tasks, especially when textual prompts lack sufficient context. However, these assumptions can somet…
Wave-Packet Surface Propagation for Light-Induced Molecular Dissociation
Shengzhe Pan, Zhaohan Zhang, Chenxi Hu +11
Recent advances in laser technology have enabled tremendous progress in photochemistry, at the heart of which is the breaking and formation of chemical bonds. Such progress has bee…
From Pixels to Views: Learning Angular-Aware and Physics-Consistent Representations for Light Field Microscopy
Feng He, Guodong Tan, Qiankun Li +2
Light field microscopy (LFM) has become an emerging tool in neuroscience for large-scale neural imaging in vivo, notable for its single-exposure volumetric imaging, broad field of…
HIVE: Understanding Post-Hallucination Reasoning in Vision Language Models
Feng He, Zhenting Wang, Qifan Wang +4
Hallucinations in vision language models (VLMs) are commonly treated as semantic errors, yet they often arise from partial or ambiguous visual evidence. Prior work mainly focuses o…
Two-Stream CNN with Loose Pair Training for Multi-modal AMD Categorization
Weisen Wang, Zhiyan Xu, Weihong Yu +8
This paper studies automated categorization of age-related macular degeneration (AMD) given a multi-modal input, which consists of a color fundus image and an optical coherence tom…
Comparison between Grating Imaging and Transient Grating Techniques on Measuring Carrier Diffusion in Semiconductor
Ke Chen, Xianghai Meng, Feng He +5
Optical grating technique, where optical gratings are generated via light inference, has been widely used to measure charge carrier and phonon transport in semiconductors. In this…
Generalizing Graph Transformers Across Diverse Graphs and Tasks via Pre-training
Yufei He, Zhenyu Hou, Yukuo Cen +5
Graph pre-training has been concentrated on graph-level tasks involving small graphs (e.g., molecular graphs) or learning node representations on a fixed graph. Extending graph pre…
Attosecond delays of high harmonic emissions from isotopes of molecular hydrogen measured by Gouy phase XUV interferometer
Mumta Hena Mustary, Liang Xu, Wanyang Wu +6
High harmonic spectroscopy can access structural and dynamical information on molecular systems encoded in amplitude and phase of high harmonic generation (HHG) signals4. However,…
Neural Network Optimization Reimagined: Decoupled Techniques for Scratch and Fine-Tuning
Xin Ning, Qiankun Li, Xiaolong Huang +5
With the accumulation of resources in the era of big data and the rise of pre-trained models in deep learning, optimizing neural networks for various tasks often involves different…
A kinetic-moment framework for electron energy dynamics in capacitively coupled plasmas: absorption, conversion, transport, and dissipation
Jianxiong Yao, Zeduan Zhang, Feng He +3
Understanding electron energy dynamics in low-temperature plasmas such as capacitively coupled plasmas (CCPs), including energy absorption, conversion, transport, and dissipation,…
Benchmarking Atomic Ionization Driven by Strong Quantum Light
Yi-Jia Mao, En-Rui Zhou, Yang Li +2
The recently available high-intensity quantum light pulses provide novel tools for controlling light-matter interactions. However, the rigor of the theoretical frameworks currently…
Spatiotemporal steering of photoelectron emission in multiphoton above-threshold ionization
Xiaochun Gong, Cheng Lin, Mingming Liu +11
We experimentally demonstrate spatiotemporal steering of photoelectron emission in multiphoton above-threshold single ionization of atoms exposed to a phase-controlled orthogonally…
Disentangling the role of laser coupling in directional breaking of molecules
Qiying Song, Zhichao Li, Sen Cui +12
The directional control of molecular dissociation with the laser electric field waveform is a paradigm and was demonstrated for a variety of molecules. In most cases, the direction…
ProtoReasoning: Prototypes as the Foundation for Generalizable Reasoning in LLMs
Feng He, Zijun Chen, Xinnian Liang +4
Recent advances in Large Reasoning Models (LRMs) trained with Long Chain-of-Thought (Long CoT) reasoning have demonstrated remarkable cross-domain generalization capabilities. Howe…
Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
Hongcheng Ni, Simon Brennecke, Xiang Gao +8
Interaction of a strong laser pulse with matter transfers not only energy but also linear momentum of the photons. Recent experimental advances have made it possible to detect the…
OSKR/OKAI: Systematic Optimization of Key Encapsulation Mechanisms from Module Lattice
Shiyu Shen, Feng He, Zhichuang Liang +2
In this work, we make \emph{systematic} optimizations of key encapsulation mechanisms (KEM) based on module learning-with-errors (MLWE), covering algorithmic design, fundamental op…
Optimizing production scheduling of steel plate hot rolling for economic load dispatch under time-of-use electricity pricing
Mao Tan, Hua-li Yang, Bin Duan +2
Time-of-Use (TOU) electricity pricing provides an opportunity for industrial users to cut electricity costs. Although many methods for Economic Load Dispatch (ELD) under TOU pricin…
LYRA: Label-Free Structural Synchronization and Resource Allocation for UAV Edge Networks
Feng He, Alireza Furutanpey, Paolo Bellavista +4
While deploying hierarchical vision models to process mission-critical tasks, UAV edge systems must adaptively update the models to sustain inference reliability under low-level en…
Longitudinal photoelectron momentum shifts induced by absorbing a single XUV photon in diatomic molecules
Di Lao, Pei-Lun He, Feng He
The photoelectron momentum shifts along the laser propagation are investigated by the time-dependent perturbation theory for diatomic molecules, such as H, N and O. S…
Time-dependent Hole States in Multiconfigurational Time-Dependent Hartree-Fock Approaches: Applications in Photoionization of Water Molecule
Zhao-Han Zhang, Yang Li, Himadri Pathak +3
By simulating the real-time multielectron wavefunction with the multi-configurational time-dependent Hartree-Fock (MCTDHF) approach, we conduct an \textit{ab initio} study of the s…
Hidden phase uncovered by ultrafast carrier dynamics in thin Bi2O2Se
Hao Li, Adeela Nairan, Xiaoran Niu +8
Bi2O2Se has attracted intensive attention due to its potential in electronics, optoelectronics, as well as ferroelectric applications. Despite that, there have only been a handful…
Orbit-resolved spin holography: role of Coulomb focusing in target-dependent polarization
Tao Chen, Yang Li, Fang Liu +3
Strong-field photoelectron holography encodes ultrafast electron dynamics through momentum-space interference. However, the orbit-resolved origin of spider-like spin fringes and th…
Secure Forgetting: A Framework for Privacy-Driven Unlearning in Large Language Model (LLM)-Based Agents
Dayong Ye, Tainqing Zhu, Congcong Zhu +5
Large language model (LLM)-based agents have recently gained considerable attention due to the powerful reasoning capabilities of LLMs. Existing research predominantly focuses on e…
Spin-charge separation in a 1D Fermi gas with tunable interactions
Ruwan Senaratne, Danyel Cavazos-Cavazos, Sheng Wang +6
Ultracold atoms confined to periodic potentials have proven to be a powerful tool for quantum simulation of complex many-body systems. We confine fermions to one-dimension to reali…
Ultrafast Two-electron Orbital Swap in Li Initiated by Attosecond pulses
Hui Jiang, Zhao-Han Zhang, Yang Li +2
A universal mechanism of ultrafast two-electron orbital swap is discovered through two-photon sequential double ionization of Li. After a electron in Li is ionized by absorbin…
The Emerged Security and Privacy of LLM Agent: A Survey with Case Studies
Feng He, Tianqing Zhu, Dayong Ye +3
Inspired by the rapid development of Large Language Models (LLMs), LLM agents have evolved to perform complex tasks. LLM agents are now extensively applied across various domains,…
Attosecond Access to the Quantum Noise of Light
En-Rui Zhou, Yi-Jia Mao, Pei-Lun He +1
Characterizing the quantum state of intense light fields on sub-cycle timescales remains beyond the reach of existing methods. Here, we show that attosecond streaking provides dire…
holographic superconductor in AdS3 spacetime
Liancheng Wang, Feng He
We do more discussions of holographic s-wave superconductors in the background of AdS3 spacetime. We analytically compute the holographic superconductor model with the motion equat…
Wetting Transitions of Condensed Droplets on Superhydrophobic Surfaces with Two-Tier Roughness
Cunjing Lv, Pengfei Hao, Xiwen Zhang +1
Although realizing wetting transitions of droplets spontaneously on solid rough surfaces is quite challenging, it is becoming a key research topic in many practical applications wh…
Quantum criticality of spinons
Feng He, Yu-Zhu Jiang, Yi-Cong Yu +2
The free fermion nature of interacting spins in one dimensional (1D) spin chains still lacks a rigorous study. In this letter we show that the length- spin strings significantly…
Bubbles created from vacuum fluctuation
Liao Liu, Feng He
We show that the bubbles can be created from vacuum fluctuation in certain De Sitter universe, so the space-time foam-like structure might really be constructed from…
BSW process of the slowly evaporating charged black hole
Liancheng Wang, Feng He, Xiangyun Fu
In this paper, we study the BSW process of the slowly evaporating charged black hole. It can be found that the BSW process will also arise near black hole horizon when the evaporat…
Improving Video Retrieval by Adaptive Margin
Feng He, Qi Wang, Zhifan Feng +4
Video retrieval is becoming increasingly important owing to the rapid emergence of videos on the Internet. The dominant paradigm for video retrieval learns video-text representatio…
A CLIP-Enhanced Method for Video-Language Understanding
Guohao Li, Feng He, Zhifan Feng
This technical report summarizes our method for the Video-And-Language Understanding Evaluation (VALUE) challenge (https://value-benchmark.github.io/challenge\_2021.html). We propo…
Time-dependent Hole States in Multiconfigurational Time-Dependent Hartree-Fock Approaches: A Time-Domain Generalization of Extended Koopmans' Theorem
Zhao-Han Zhang, Yang Li, Himadri Pathak +3
We introduce a framework for resolving electron-hole dynamics within wavefunction-based multiconfigurational time-dependent Hartree-Fock (MCTDHF) theory. Central to this framework…
The Gravitational Deflection of Light in F(R)-gravity
Long Huang, Feng He, Hai Huang +1
The fact that the gravitation could deflect the light trajectory has been confirmed by a large number of observation data, that is consistent with the result calculated by Einstein…
Evaluation of Vortex Criteria by Virtue of the Quadruple Decomposition of Velocity Gradient Tensor
Zhen Li, Xiwen Zhang, Feng He
Based on the analysis of the velocity gradient tensor, we investigate in this paper the physical interpretation and limitations of four vortex criteria: , , and…
Phonon-Phonon Quantum Coherent Coupling in GaAs/AlAs Superlattice
Feng He, Nathanial Sheehan, Seth R Bank +2
Quantum coherent coupling between a zone-center phonon and two acoustic phonons was observed in two GaAs/AlAs superlattices (8 nm/8 nm and 5.4 nm/5.4 nm) at ambient temperature. Us…
Turning Black Box into White Box: Dataset Distillation Leaks
Huajie Chen, Tianqing Zhu, Yuchen Zhong +7
Dataset distillation compresses a large real dataset into a small synthetic one, enabling models trained on the synthetic data to achieve performance comparable to those trained on…
Tail-wave-assisted Positron Acceleration in Nonlinear Laser Plasma Wakefields
Wei-Yuan Liu, Xing-Long Zhu, Min Chen +4
Relativistic laser wakefield acceleration is characterized by an unsurpassed accelerating gradient, which is very suitable for electron acceleration over short distances and could…
Professor Chen Ping Yang's early significant contributions to mathematical physics
Xi-Wen Guan, Feng He
In the 60's Professor Chen Ping Yang with Professor Chen Ning Yang published several seminal papers on the study of Bethe's hypothesis for various problems of physics. The works on…
How Robust is Model Editing after Fine-Tuning? An Empirical Study on Text-to-Image Diffusion Models
Feng He, Zhenyang Liu, Marco Valentino +1
Model editing offers a low-cost technique to inject or correct a particular behavior in a pre-trained model without extensive retraining, supporting applications such as factual co…
Catch the Patient, Not the AI: Collective Sensemaking in an Online Health Community
Feng He
Patients and caregivers increasingly use artificial intelligence (AI) tools to interpret medical reports, weigh care decisions, and seek emotional support. Yet most research treats…
Statistical Signatures of Integrable and Non-Integrable Quantum Hamiltonians
Feng He, Arthur Hutsalyuk, Giuseppe Mussardo +1
Integrability is a cornerstone of classical mechanics, where it has a precise meaning. Extending this notion to quantum systems, however, remains subtle and unresolved. In particul…
Probing valence electron and hydrogen dynamics using charge-pair imaging with ultrafast electron diffraction
Tianyu Wang, Hui Jiang, Ming Zhang +5
A key challenge in ultrafast science has been to directly track the coupled motions of electrons and nuclei in real-space and real-time. This study presents a significant step towa…
Optimal laser pulse design for transferring the coherent nuclear wave packet of H
Jun Zhang, Feng He
Within the Franck-Condon approximation, the single ionization of H leaves H in a coherent superposition of 19 nuclear vibrational states. We numerically design an optimal…
Unleashing Foundation Vision Models: Adaptive Transfer for Diverse Data-Limited Scientific Domains
Qiankun Li, Feng He, Huabao Chen +3
In the big data era, the computer vision field benefits from large-scale datasets such as LAION-2B, LAION-400M, and ImageNet-21K, Kinetics, on which popular models like the ViT and…
Generalized phase-sensitivity of directional bond-breaking in laser-molecule interaction
Sarayoo Kangaparambil, Václav Hanus, Martin Dorner-Kirchner +9
We establish a generalized picture of the phase-sensitivity of laser-induced directional bond-breaking using the H molecule as the example. We show that the well-known proton e…
Condensation and jumping relay of droplets on lotus leaf
Cunjing Lv, Pengfei Hao, Zhaohui Yao +3
Dynamic behavior of micro water droplet condensed on a lotus leaf with two-tier roughness is studied. Under laboratory environment, the contact angle of the micro droplet on single…
Magnetic-field effect in high-order above-threshold ionization
Kang Lin, Simon Brennecke, Hongcheng Ni +15
We experimentally and theoretically investigate the influence of the magnetic component of an electromagnetic field on high-order above-threshold ionization of xenon atoms driven b…
SCR: Training Graph Neural Networks with Consistency Regularization
Chenhui Zhang, Yufei He, Yukuo Cen +7
We present the SCR framework for enhancing the training of graph neural networks (GNNs) with consistency regularization. Regularization is a set of strategies used in Machine Learn…
Zero-energy proton dissociation of H through stimulated Raman scattering
Xinhua Xie, Stefan Roither, Seyedreza Larimian +5
We show that (near-)zero energy proton emission from H in strong two-color and broadband laser fields is dominated by a stimulated Raman scattering process taking place on th…
Seed1.5-Thinking: Advancing Superb Reasoning Models with Reinforcement Learning
ByteDance Seed, :, Jiaze Chen +267
We introduce Seed1.5-Thinking, capable of reasoning through thinking before responding, resulting in improved performance on a wide range of benchmarks. Seed1.5-Thinking achieves 8…
Efficient Adaptive Bandwidth Allocation for Deadline-Aware Online Admission Control in Time-Sensitive Networking
Sifan Yu, Feng He, Anlan Xie +1
With the growing demand for dynamic real-time applications, online admission control for time-critical event-triggered (ET) traffic in Time-Sensitive Networking (TSN) has become a…
Imaging the photochemical dynamics of cyclobutanone with MeV ultrafast electron diffraction
Tianyu Wang, Hui Jiang, Cheng Jin +5
We study the photoinduced chemical dynamics of cyclobutanone upon excitation at 200 nm to the 3s Rydberg state using MeV ultrafast electron diffraction (UED). We observe both the e…
Attosecond pulses at kiloelectronvolt photon energies from high-order harmonic generation with core electrons
Christian Buth, Feng He, Joachim Ullrich +2
High-order harmonic generation (HHG) in simultaneous intense near-infrared (NIR) laser light and brilliant x rays above an inner-shell absorption edge is examined. A tightly bound…
mu-Forcing: Training Variational Recurrent Autoencoders for Text Generation
Dayiheng Liu, Xu Yang, Feng He +2
It has been previously observed that training Variational Recurrent Autoencoders (VRAE) for text generation suffers from serious uninformative latent variables problem. The model w…
Robust Strategies for Affirming Kramers-Henneberger Atoms
Pei-Lun He, Zhao-Han Zhang, Feng He
Atoms exposed to high-frequency strong laser fields experience the ionization suppression due to the deformation of Kramers-Henneberger (KH) wave functions, which has not been conf…
Phase separation of metastable CoCrFeNi high entropy alloy at intermediate temperatures
Feng He, Zhijun Wang, Qingfeng Wu +3
The CoCrFeNi alloy is widely accepted as an exemplary stable base for high entropy alloys (HEAs). Although various investigations prove it to be stable solid solution, its phase st…
LPS-GNN : Deploying Graph Neural Networks on Graphs with 100-Billion Edges
Xu Cheng, Liang Yao, Feng He +6
Graph Neural Networks (GNNs) have emerged as powerful tools for various graph mining tasks, yet existing scalable solutions often struggle to balance execution efficiency with pred…
Coherent Control of Ion-Photoelectron Dynamics through Rabi Oscillations: An ab initio study
Bo-Ren Shen, Yi-Jia Mao, Zhao-Han Zhang +4
We present first-principles numerical simulations of photoionization in neon induced by bichromatic extreme ultraviolet pulses with frequencies and , specially chosen to…
Carrier Trapping by Oxygen Impurities in Molybdenum Diselenide
Ke Chen, Anupam Roy, Amritesh Rai +7
Understanding defect effect on carrier dynamics is essential for both fundamental physics and potential applications of transition metal dichalcogenides. Here, the phenomenon of ox…
Giant Thermal Conductivity Enhancement in Multilayer MoS2 under Highly Compressive Strain
Xianghai Meng, Tribhuwan Pandey, Suyu Fu +9
Multilayer MoS2 possesses highly anisotropic thermal conductivities along in-plane and cross-plane directions that could hamper heat dissipation in electronics. With about 9% cross…
Attosecond probing of instantaneous AC Stark shifts in helium atoms
Feng He, Camilo Ruiz, Andreas Becker +1
Based on numerical solutions of the time-dependent Schrödinger equation for either one or two active electrons, we propose a method for observing instantaneous level shifts in an…
Resolving Rydberg-Electron Recapture Dynamics via Laser-driven Frustrated Tunneling Ionization
Sainan Peng, Yudong Chen, Yang Li +4
By employing two-color counter-rotating circularly polarized laser fields, we investigate the dynamics of electron recapture into Rydberg states under strong, ultrashort laser puls…
Accelerated Carrier Recombination by Grain Boundary/Edge Defects in MBE Grown Transition Metal Dichalcogenides
Ke Chen, Anupam Roy, Amritesh Rai +5
Defect-carrier interaction in transition metal dichalcogenides (TMDs) play important roles in carrier relaxation dynamics and carrier transport, which determines the performance of…