Publications (64)
Simultaneous Localization, Mapping, and Manipulation for Unsupervised Object Discovery
Lu Ma, Mahsa Ghafarianzadeh, Dave Coleman +2
We present an unsupervised framework for simultaneous appearance-based object discovery, detection, tracking and reconstruction using RGBD cameras and a robot manipulator. The syst…
DataFlex: A Unified Framework for Data-Centric Dynamic Training of Large Language Models
Hao Liang, Zhengyang Zhao, Meiyi Qiang +22
Data-centric training has emerged as a promising direction for improving large language models (LLMs) by optimizing not only model parameters but also the selection, composition, a…
Epitaxial Growth of Large Area Single-Crystalline Few-Layer MoS2 with Room Temperature Mobility of 192 cm2V-1s-1
Lu Ma, Digbijoy N. Nath, Edwin W. Lee +4
We report on the vapor-solid growth of single crystalline few-layer MoS2 films on (0001)-oriented sapphire with excellent structural and electrical properties over centimeter lengt…
Qatar Exoplanet Survey: Qatar-7b -- A Very Hot Jupiter Orbiting a Metal Rich F-Star
Khalid Alsubai, Zlatan Tsvetanov, David W. Latham +18
We present the discovery of Qatar-7b --- a very hot and inflated giant gas planet orbiting close its parent star. The host star is a relatively massive main sequence F-star with ma…
Noise Classification Aided Attention-Based Neural Network for Monaural Speech Enhancement
Lu Ma, Song Yang, Yaguang Gong +1
This paper proposes an noise type classification aided attention-based neural network approach for monaural speech enhancement. The network is constructed based on a previous work…
Voice Activity Detection Scheme by Combining DNN Model with GMM Model
Lu Ma, Xiaomeng Zhang, Pei Zhao +1
Due to the superior modeling ability of deep neural network (DNN), it is widely used in voice activity detection (VAD). However, the performance may degrade if no sufficient data e…
Physical Properties of H II Regions in M51 from Spectroscopic Observations
Peng Wei, Hu Zou, Xu Kong +13
M51 and NGC 5195 is an interacting system that can be explored in great details with ground-based telescopes. The H II regions in M51 were observed using the 2.16 m telescope of th…
GIFT: Reconciling Post-Training Objectives via Finite-Temperature Gibbs Initialization
Zhengyang Zhao, Lu Ma, Yizhen Jiang +7
The prevailing post-training paradigm for Large Reasoning Models (LRMs) - Supervised Fine-Tuning (SFT) followed by Reinforcement Learning (RL) - suffers from an intrinsic optimizat…
A magneto-optical trap with millimeter ball lenses
Cainan S. Nichols, Leo M. Nofs, Michael A. Viray +3
We present a magneto-optical trap (MOT) design based on millimeter ball lenses, contained within a metal cube of 0.75 side length. We present evidence of trapping…
Plasmonic Photocatalysis Enables Selective Oxidative Coupling of Methane with Nitrous Oxide under Ambient Conditions
Serin Lee, Lin Yuan, Elijah Begin +8
Methane (CH4) and nitrous oxide (N2O) are potent greenhouse gases that represent substantial chemical energy. Conversion of these abundant waste gases to high-value chemicals typic…
Reliable and Real-Time Highway Trajectory Planning via Hybrid Learning-Optimization Frameworks
Yujia Lu, Chong Wei, Lu Ma +1
Autonomous highway driving involves high-speed safety risks due to limited reaction time, where rare but dangerous events may lead to severe consequences. This places stringent req…
Evaluating and Predicting Distorted Human Body Parts for Generated Images
Lu Ma, Kaibo Cao, Hao Liang +6
Recent advancements in text-to-image (T2I) models enable high-quality image synthesis, yet generating anatomically accurate human figures remains challenging. AI-generated images f…
Layer-Transferred MoS2/GaN PN Diodes
Edwin W. Lee, Choong Hee Lee, Pran K. Paul +6
Electrical and optical characterization of two-dimensional/three-dimensional (2D/3D) p-molybdenum disulfide/n-gallium nitride (p-MoS2/n-GaN) heterojunction diodes are reported. Dev…
An adaptive filter bank based neural network approach for time delay estimation and speech enhancement
Lu Ma
Time delay estimation (TDE) plays a key role in acoustic echo cancellation (AEC) using adaptive filter method. Considerable residual echo will be left if estimation error arises. H…
Millikelvin digital-to-analog converter for superconducting quantum processors
Ruizi Hu, Zongyuan Li, Zhancheng Yao +19
Scaling superconducting quantum processors is increasingly constrained by the wiring, heat load, and calibration overhead associated with delivering high-resolution analog signals…
Low frequency noise in chemical vapor deposited MoS2
Yuji Wang, Xinhang Luo, Ningjiao Zhang +5
Inherent low frequency noise is a ubiquitous phenomenon, which limits operation and performance of electronic devices and circuits. This limiting factor is very important for nanos…
Scalable Fluxonium Quantum Processors via Tunable-Coupler Architecture
Ze Zhan, Zishuo Li, Fei Wang +24
Superconducting quantum processors have largely converged on transmon-based architectures, while alternative qubit modalities with intrinsic error protection have lacked a demonstr…
A Lite Microphone Array Beamforming Scheme with Maximum Signal-to-Noise Ratio Filter
Lu Ma, Xin Zhao, Pei Zhao +1
Since space-domain information can be utilized, microphone array beamforming is often used to enhance the quality of the speech by suppressing directional disturbance. However, wit…
Thinking by Subtraction: Confidence-Driven Contrastive Decoding for LLM Reasoning
Lexiang Tang, Weihao Gao, Bingchen Zhao +4
Recent work on test-time scaling for large language model (LLM) reasoning typically assumes that allocating more inference-time computation uniformly improves correctness. However,…
Leash: Adaptive Length Penalty and Reward Shaping for Efficient Large Reasoning Model
Yanhao Li, Lu Ma, Jiaran Zhang +3
Existing approaches typically rely on fixed length penalties, but such penalties are hard to tune and fail to adapt to the evolving reasoning abilities of LLMs, leading to suboptim…
DataFlow: An LLM-Driven Framework for Unified Data Preparation and Workflow Automation in the Era of Data-Centric AI
Hao Liang, Xiaochen Ma, Zhou Liu +32
The rapidly growing demand for high-quality data in Large Language Models (LLMs) has intensified the need for scalable, reliable, and semantically rich data preparation pipelines.…
Acceleration Algorithms in GNNs: A Survey
Lu Ma, Zeang Sheng, Xunkai Li +5
Graph Neural Networks (GNNs) have demonstrated effectiveness in various graph-based tasks. However, their inefficiency in training and inference presents challenges for scaling up…
Defect Engineered Room-Temperature Ferromagnetism in Quasi-Two-Dimensional Nitrided CoTa2O6
Yalin Ma, Shuang Zhao, Xiao Zhou +11
Thermal ammonolysis of quasi-two-dimensional (quasi-2D) CoTa2O6 yields the O2-/N3- and anionic vacancy ordered Co2+Ta5+2O6-xN2x/3x/3 (x 0.15) that exhibits a transitio…
ANDES: Agent Native Data Evolving Synthesis Tool for Autonomous Instruction Alignment
Zhengyang Zhao, Shengjie Ye, Lu Ma +3
AI agents are increasingly being tasked with automating AI research itself, particularly the critical post-training phase that transforms base LLMs into aligned assistants. However…
Efficient initialization of fluxonium qubits based on auxiliary energy levels
Tenghui Wang, Feng Wu, Fei Wang +13
Fast and high-fidelity qubit initialization is crucial for low-frequency qubits such as fluxonium, and in applications of many quantum algorithms and quantum error correction codes…
Ming-Flash-Omni: A Sparse, Unified Architecture for Multimodal Perception and Generation
Inclusion AI, :, Bowen Ma +73
We propose Ming-Flash-Omni, an upgraded version of Ming-Omni, built upon a sparser Mixture-of-Experts (MoE) variant of Ling-Flash-2.0 with 100 billion total parameters, of which on…
Pulsations of the High-Amplitude Scuti Star YZ Bootis
Taozhi Yang, Ali Esamdin, Jianning Fu +5
We present a study on the pulsations of the high-amplitude Scuti star YZ Boo based on photometric observations in Johnson and bands with both the Nanshan 1-m telescope…
Satellite-to-ground quantum key distribution
Sheng-Kai Liao, Wen-Qi Cai, Wei-Yue Liu +31
Quantum key distribution (QKD) uses individual light quanta in quantum superposition states to guarantee unconditional communication security between distant parties. In practice,…
EchoFilter: End-to-End Neural Network for Acoustic Echo Cancellation
Lu Ma, Song Yang, Yaguang Gong +2
Acoustic Echo Cancellation (AEC) whose aim is to suppress the echo originated from acoustic coupling between loudspeakers and microphones, plays a key role in voice interaction. Li…
Training with Harnesses: On-Policy Harness Self-Distillation for Complex Reasoning
Zhengyang Zhao, Lu Ma, Wentao Zhang
Inference-time harnesses substantially improve large language models on complex reasoning tasks. However, the intrinsic capabilities of the underlying model remain unchanged by the…
Growth and Electrical Characterization of 2D Layered MoS2/SiC Heterojunctions
Edwin W. Lee, Lu Ma, Digbijoy N. Nath +3
The growth and electrical characterization of a heterojunction formed between 2D layered p-MoS2 and nitrogen-doped 4H-SiC is reported. Direct growth of p-type MoS2 films on SiC was…
Site testing campaign for the Large Optical/infrared Telescope of China: Overview
Lu Feng, Jin-Xin Hao, Zi-Huang Cao +35
The Large Optical/infrared Telescope (LOT) is a ground-based 12m diameter optical/infrared telescope which is proposed to be built in the western part of China in the next decade.…
Acoustic Echo Cancellation by Combining Adaptive Digital Filter and Recurrent Neural Network
Lu Ma, Hua Huang, Pei Zhao +1
Acoustic Echo Cancellation (AEC) plays a key role in voice interaction. Due to the explicit mathematical principle and intelligent nature to accommodate conditions, adaptive filter…
The Wide-field Photometric System of the Nanshan One-meter Telescope
Chunhai Bai, Guojie Feng, Xuan Zhang +9
The Nanshan One-meter Wide-field Telescope (NOWT) is a prime focus system located at Nanshan Station of Xinjiang Astronomical Observatories (XAO). The field of view(FOV) was design…
Competitive Wakeup Scheme for Distributed Devices
Lu Ma, Haiping Zhang, Pei Zhao +1
Wakeup is the primary function in voice interaction which is the mainstream scheme in man-machine interaction (HMI) applications for smart home. All devices will response if the sa…
Spectra-to-Structure and Structure-to-Spectra Inference Across the Periodic Table
Yufeng Wang, Peiyao Wang, Lu Wei +4
X-ray Absorption Spectroscopy (XAS) is a powerful technique for probing local atomic environments, yet its interpretation remains limited by the need for expert-driven analysis, co…
Global Mean-Amplitude Enhanced Spiking Neural Network Coherent Ising Machine
Yan Chen Jiang, Lu Ma, Chuan Wang +1
The coherent Ising machine (CIM) is a quantum-inspired computing platform that leverages optical parametric oscillation dynamics to solve combinatorial optimization problems by sea…
Fractal Characterization of Low-Correlation Signals in AI-Generated Image Detection
Wenwei Xie, Jie Yin, Lu Ma +2
AI-generated imagery has reached near-photorealistic fidelity, yet this technology poses significant threats to information security and societal trust. Existing deepfake detection…
Probing single protein dynamics on liposome surfaces
Dong-Fei Ma, Chun-Hua Xu, Wen-Qing Hou +6
It is crucial to measure position and conformational changes of a membrane-interacting protein relative to the membrane surface. This is however challenging because the thickness o…
From Passive Retrieval to Active Memory Navigation: Learning to Use Memory as a Structured Action Space
Yue Xu, Yutao Sun, Yihao Liu +7
Long-term user memory is essential for personalized conversational agents, yet many memory systems still expose memory through passive retrieval interfaces, making the model a cons…
Converting qubit relaxation into erasures with a single fluxonium
Chenlu Liu, Yulong Li, Jiahui Wang +9
Qubits that experience predominantly erasure errors offer distinct advantages for fault-tolerant operation. Indeed, dual-rail encoded erasure qubits in superconducting cavities and…
Not All Tokens and Heads Are Equally Important: Dual-Level Attention Intervention for Hallucination Mitigation
Lexiang Tang, Xianwei Zhuang, Bang Yang +5
Large vision-language models (LVLMs) have demonstrated impressive capabilities across diverse multimodal tasks, yet they remain highly susceptible to visual hallucinations (VH), of…
Multi-Scale Attention Neural Network for Acoustic Echo Cancellation
Lu Ma, Song Yang, Yaguang Gong +1
Acoustic Echo Cancellation (AEC) plays a key role in speech interaction by suppressing the echo received at microphone introduced by acoustic reverberations from loudspeakers. Sinc…
XDIP: A Curated X-ray Absorption Spectrum Dataset for Iron-Containing Proteins
Yufeng Wang, Peiyao Wang, Lu Wei +6
Earth-abundant iron is an essential metal in regulating the structure and function of proteins. This study presents the development of a comprehensive X-ray Absorption Spectroscopy…
Measurement of DC and AC electric fields inside an atomic vapor cell with wall-integrated electrodes
Lu Ma, Michael A. Viray, David A. Anderson +1
We present and characterize an atomic vapor cell with silicon ring electrodes directly embedded between borosilicate glass tubes. The cell is assembled with an anodic bonding metho…
Unified Flux Control Architecture for Fluxonium Qubits
Xianchuang Pan, Jiahui Wang, Tao Zhou +14
Control architectures that reduce hardware overhead while maintaining high-fidelity operations are essential for the continued scaling of superconducting quantum processors. Here w…
Qatar Exoplanet Survey: Qatar-8b, 9b and 10b --- A Hot Saturn and Two Hot Jupiters
Khalid Alsubai, Zlatan I. Tsvetanov, Stylianos Pyrzas +27
In this paper we present three new extrasolar planets from the Qatar Exoplanet Survey (QES). Qatar-8b is a hot Saturn, with Mpl = 0.37 Mjup and Rpl = 1.3 Rjup, orbiting a solar-lik…
DARO: Difficulty-Aware Reweighting Policy Optimization
Jingyu Zhou, Lu Ma, Hao Liang +3
Recent advances in large language models (LLMs) have shown that reasoning ability can be significantly enhanced through Reinforcement Learning with Verifiable Rewards (RLVR). Group…
Native approach to controlled-Z gates in inductively coupled fluxonium qubits
Xizheng Ma, Gengyan Zhang, Feng Wu +27
The fluxonium qubits have emerged as a promising platform for gate-based quantum information processing. However, their extraordinary protection against charge fluctuations comes a…
Pair production of the Elementary Goldstone Higgs boson at the LHC
Chong-Xing Yue, Lu Ma, Ya-bing Zuo +1
The Elementary Goldstone Higgs (EGH) model is a perturbative extension of the standard model (SM), which identifies the EGH boson as the observed Higgs boson. In this paper, we stu…
Learning What Reinforcement Learning Can't: Interleaved Online Fine-Tuning for Hardest Questions
Lu Ma, Hao Liang, Meiyi Qiang +9
Recent advances in large language model (LLM) reasoning have shown that sophisticated behaviors such as planning and self-reflection can emerge through reinforcement learning (RL).…
Vector Approximate Message Passing based Channel Estimation for MIMO-OFDM Underwater Acoustic Communications
Wenxuan Chen, Jun Tao, Lu Ma +1
Accurate channel estimation is critical to the performance of orthogonal frequency-division multiplexing (OFDM) underwater acoustic (UWA) communications, especially under multiple-…
Spatially-resolved Stellar Population Properties of the M 51-NGC 5195 System from Multi-wavelength Photometric Data
Peng Wei, Hu Zou, Lin Lin +5
Using multi-band photometric images of M 51 and its companion NGC 5195 from ultraviolet to optical and infrared, we investigate spatially resolved stellar population properties of…
The Stellar Abundances and Galactic Evolution Survey (SAGES) -- -- I. General Description and the First Data Release (DR1)
Zhou Fan, Gang Zhao, Wei Wang +35
The Stellar Abundances and Galactic Evolution Survey (SAGES) of the northern sky is a specifically-designed multi-band photometric survey aiming to provide reliable stellar paramet…
High coherence fluxonium manufactured with a wafer-scale uniformity process
Fei Wang, Kannan Lu, Huijuan Zhan +32
Fluxonium qubits are recognized for their high coherence times and high operation fidelities, attributed to their unique design incorporating a superinductor, which is typically im…
A Weak Modulation Effect Detected in the Light Curves of KIC 5950759: Intrinsic or Instrumental Effect?
Taozhi Yang, A. Esamdin, Fangfang Song +8
In this paper, the high-precision light curves of target KIC 5950759 are analyzed. The Fourier analysis of the long cadence light curve reveals 3 independent frequencies.…
Site-testing at Muztagh-ata site I: Ground Meteorology and Sky Brightness
Jing Xu, Ali Esamdin, Jin-xin Hao +28
Site-testing is crucial for achieving the goal of scientific research and analysis of meteorological and optical observing conditions is one of the basic tasks of it. As one of thr…
Satellite-relayed intercontinental quantum network
Sheng-Kai Liao, Wen-Qi Cai, Johannes Handsteiner +33
We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and multiple ground stations located in Xinglong, Nanshan, and Graz, which establish satellite-t…
Advancing from Automated to Autonomous Beamline by Leveraging Computer Vision
Baolu Li, Hongkai Yu, Huiming Sun +4
The synchrotron light source, a cutting-edge large-scale user facility, requires autonomous synchrotron beamline operations, a crucial technique that should enable experiments to b…
Site-testing at Muztagh-ata site II: Seeing statistics
Jing Xu, Ali Esamdin, Jin-xin Hao +28
In this article, we present a detailed analysis of the statistical properties of seeing for the Muztagh-ata site which is the candidate site for hosting future Chinese Large Optica…
Large Area Single Crystal (0001) Oriented MoS2 Thin Films
Masihhur R. Laskar, Lu Ma, ShanthaKumar K +6
Layered metal dichalcogenide materials are a family of semiconductors with a wide range of energy band gaps and properties, and potential to open up new areas of physics and techno…
A study of variable stars in the open cluster NGC 1582 and its surrounding field
Fang-Fang Song, Ali Esamdin, Lu Ma +4
This paper presents the Charge-Coupled Device time-series photometric observations of the open cluster NGC 1582 and its surrounding field with Johnson B, V and R filters by using N…
Photometric calibration of the Stellar Abundance and Galactic Evolution Survey (SAGES): Nanshan One-meter Wide-field Telescope g, r, and i band imaging data
Kai Xiao, Haibo Yuan, Bowen Huang +16
In this paper, a total of approximately 2.6 million dwarfs were constructed as standard stars, with an accuracy of about 0.01-0.02 mag for each band, by combining spectroscopic dat…
Multi-Scale Temporal Convolution Network for Classroom Voice Detection
Lu Ma, Xintian Wang, Song Yang +2
Teaching with the cooperation of expert teacher and assistant teacher, which is the so-called "double-teachers classroom", i.e., the course is giving by the expert online and prese…