Publications (71)
Far infrared to terahertz widely tunable narrow linewidth light source via surface-emitting periodically poled thin film lithium niobate waveguides
Valerie Yoshioka, Jicheng Jin, Qiang Lin +1
Generating widely tunable, continuous wave light at long wavelengths via difference frequency generation (DFG) remains challenging due to high absorption and dispersion. The relati…
Chip-scale ultrafast soliton laser
Qili Hu, Raymond Lopez-Rios, Zhengdong Gao +5
Femtosecond laser, owing to their ultrafast time scales and broad frequency bandwidths, have substantially changed fundamental science over the past decades, from chemistry and bio…
Benchmarking the Residual: What Long-Horizon Evaluations Add Beyond Matched Short-Task Performance
Chao Peng, Zhiheng Lyu, Peijie Dong +2
The paper proposes a benchmark metric called the horizon residual to compare long-horizon task success against predictions from short-stage baselines, highlighting how performance…
Excess photon-assisted noise of Majorana and Andreev bound states
Qiang Lin, Ying-Xin Liang, Ke He +1
Photon-assisted tunneling arises under an ac bias, with the drive frequency setting the photon energy. The excess photon-assisted noise is defined as the difference between the sho…
Ultra-broadband Entangled Photons on a Nanophotonic Chip
Usman A. Javid, Jingwei Ling, Jeremy Staffa +3
Nanophotonic entangled-photon sources are a critical building block of chip-scale quantum photonic architecture and have seen significant development over the past two decades. The…
AP2O-Coder: Adaptively Progressive Preference Optimization for Reducing Compilation and Runtime Errors in LLM-Generated Code
Jianqing Zhang, Wei Xia, Hande Dong +2
LLMs' code generation capabilities have yielded substantial improvements in the effectiveness of programming tasks. However, LLM-generated code still suffers from compilation and r…
Cavity optomechanical transduction sensing of single molecules
Wenyan Yu, Wei C. Jiang, Qiang Lin +1
We report narrow linewidth optomechanical oscillation of a silica microsphere immersed in a buffer solution. Through a novel optomechanical transduction sensing approach, single 10…
Optical parametric generation in a lithium niobate microring with modal phase matching
Rui Luo, Yang He, Hanxiao Liang +3
The lithium niobate integrated photonic platform has recently shown great promise in nonlinear optics on a chip scale. Here, we report second-harmonic generation in a high-Q lithiu…
HiFloat4 Format for Language Model Inference
Yuanyong Luo, Jing Huang, Yu Cheng +19
This paper introduces HiFloat4 (HiF4), a block floating-point data format tailored for deep learning. Each HiF4 unit packs 64 4-bit elements with 32 bits of shared scaling metadata…
Partially coherent matter wave and its evolution
Jun Chen, Qiang Lin
The evolution and propagation of a partially coherent matter wave (PCMW) is investigated theoretically by the correlation function method. The ABCD matrix formalism previously used…
Quantum correlations from dynamically modulated optical nonlinear interactions
Usman A. Javid, Qiang Lin
We investigate optical nonlinear interactions in a dynamic environment by studying generation of photons in spontaneous parametric down conversion inside a nonlinear cavity where t…
ReCreate: Reasoning and Creating Domain Agents Driven by Experience
Zhezheng Hao, Hong Wang, Jian Luo +6
Large Language Model agents are reshaping the industrial landscape. However, most practical agents remain human-designed because tasks differ widely, making them labor-intensive to…
N-photon solutions to the two-qubit quantum Rabi model
Qiang Lin, Junlong Tian, Pinghua Tang +1
We studied the two-qubit quantum Rabi model and found its dark state solutions with at most N photons. One peculiar case presents when , which has constant eigenenergy in the…
Temporally Asymmetric Bi-photon States in Cavity Enhanced Optical Parametric Processes
Usman A. Javid, Steven D. Rogers, Austin Graf +1
Generation and control of quantum states of light on an integrated platform has become an essential tool for scalable quantum technologies. Chip scale sources such as nonlinear opt…
Rethinking Entropy Interventions in RLVR: An Entropy Change Perspective
Zhezheng Hao, Hong Wang, Haoyang Liu +6
Reinforcement Learning with Verifiable Rewards (RLVR) serves as a cornerstone technique for enhancing the reasoning capabilities of Large Language Models (LLMs). However, its train…
High-quality lithium niobate photonic crystal nanocavities
Hanxiao Liang, Rui Luo, Yang He +2
Lithium niobate (LN) exhibits unique material characteristics that have found many important applications. Scaling LN devices down to a nanoscopic scale can dramatically enhance li…
The Deviation of the Vacuum Refractive Index Induced by a Static Gravitational Field
Xing-Hao Ye, Qiang Lin
We analyzed the influence of static gravitational field on the vacuum and proposed the concept of inhomogeneous vacuum. According to the observational result of the light deflectio…
Electromagnetically Induced Transparency and Slow Light with Optomechanics
Amir H. Safavi-Naeini, Thiago P. Mayer Alegre, Jasper Chan +6
Controlling the interaction between localized optical and mechanical excitations has recently become possible following advances in micro- and nano-fabrication techniques. To date,…
Controlling entanglement sudden death in cavity QED by classical driving fields
Jian-Song Zhang, Jing-Bo Xu, Qiang Lin
We investigate the entanglement dynamics of a quantum system consisting of two-level atoms interacting with vacuum or thermal fields with classical driving fields. We find that the…
YH-MINER: Multimodal Intelligent System for Natural Ecological Reef Metric Extraction
Mingzhuang Wang, Yvyang Li, Xiyang Zhang +9
Coral reefs, crucial for sustaining marine biodiversity and ecological processes (e.g., nutrient cycling, habitat provision), face escalating threats, underscoring the need for eff…
Three-dimensional hyperspectral imaging with optical microcombs
Stephan Amann, Edoardo Vicentini, Bingxin Xu +7
Optical frequency combs have revolutionised time and frequency metrology [1, 2]. The advent of microresonator-based frequency combs ('microcombs' [3-5]) is set to lead to the minia…
UniSVG: A Unified Dataset for Vector Graphic Understanding and Generation with Multimodal Large Language Models
Jinke Li, Jiarui Yu, Chenxing Wei +5
Unlike bitmap images, scalable vector graphics (SVG) maintain quality when scaled, frequently employed in computer vision and artistic design in the representation of SVG code. In…
The effect of permanent dipole moment on the polar molecule cavity quantum electrodynamics
Jing-Yun Zhao, Li-Guo Qin, Xun-Ming Cai +2
A dressed-state perturbation theory beyond the rotating waveapproxi-mation (RWA) is presented to investigate the interaction between a two level electronic transition of the polar…
Five-Partite Entanglement Generation in A High-Q Microresonator
Yutian Wen, Xufei Wu, Rongyu Li +2
We propose to produce five-partite entanglement via cascaded four-wave mixing in a high-Q microresonator that may become a key to future one-way quantum computation on chip. A theo…
Multicolor Bound Soliton Molecule
Rui Luo, Hanxiao Liang, Qiang Lin
We show a new class of bound soliton molecule that exists in a parametrically driven nonlinear optical cavity with appropriate dispersion characteristics. The composed solitons exh…
Lithium niobate photonic-crystal electro-optic modulator
Mingxiao Li, Jingwei Ling, Yang He +3
Modern advanced photonic integrated circuits require dense integration of high-speed electro-optic functional elements on a compact chip that consumes only moderate power. Energy e…
Cavity optomechanical sensing in the nonlinear saturation limit
Usman A. Javid, Steven D. Rogers, Austin Graf +1
Photonic sensors based upon high-quality optical microcavities have found a wide variety of applications ranging from inertial sensing, electro- and magnetometry to chemical and bi…
Static and dynamic wavelength routing via the gradient optical force
Jessie Rosenberg, Qiang Lin, Kerry J. Vahala +1
Here we propose and demonstrate an all-optical wavelength-routing approach which uses a tuning mechanism based upon the optical gradient force in a specially-designed nano-optomech…
Chip-scale Spontaneous Quasi-Phase-Matched Micro-Racetrack Resonator
Tingge Yuan, Yi'an Liu, Xiongshuo Yan +6
Due to their capacity for non-classical light generation, high-efficiency second-order nonlinear parametric processes play an important role in quantum photonic technology, and chi…
Scheduling Your LLM Reinforcement Learning with Reasoning Trees
Hong Wang, Zhezheng Hao, Jian Luo +6
Using Reinforcement Learning with Verifiable Rewards (RLVR) to optimize Large Language Models (LLMs) can be conceptualized as progressively editing a query's `Reasoning Tree'. This…
Biphoton statistic of quantum light generated on a silicon chip
Xiyuan Lu, Wei C. Jiang, Jidong Zhang +1
We demonstrate a silicon-chip biphoton source with an unprecedented quantum cross correlation up to . The emitted biphotons are…
Perfect soliton crystals on demand
Yang He, Jingwei Ling, Mingxiao Li +1
Recent advance of soliton microcombs has shown great promise to revolutionize many important areas such as optical communication, spectroscopic sensing, optical clock, and frequenc…
Coherent quantum dynamics of systems with coupling-induced creation pathways
Steven D. Rogers, Austin Graf, Usman A. Javid +1
Many technologies emerging from quantum information science heavily rely upon the generation and manipulation of entangled quantum states. Here, we propose and demonstrate a new cl…
A silicon-chip source of bright photon-pair comb
Wei C. Jiang, Xiyuan Lu, Jidong Zhang +2
Integrated quantum photonics relies critically on the purity, scalability, integrability, and flexibility of a photon source to support diverse quantum functionalities on a single…
High-Q two-dimensional lithium niobate photonic crystal slab nanoresonators
Mingxiao Li, Hanxiao Liang, Rui Luo +2
Lithium niobate (LN), known as "silicon of photonics," exhibits outstanding material characteristics with great potential for broad applications. Enhancing light-matter interaction…
High-frequency and high-quality silicon carbide optomechanical microresonators
Xiyuan Lu, Jonathan Y. Lee, Qiang Lin
Silicon carbide (SiC) exhibits excellent material properties attractive for broad applications. We demonstrate the first SiC optomechanical microresonators that integrate high mech…
Evolve as a Team: Collaborative Self-Evolution for LLM-based Multi-Agent Systems
Zhezheng Hao, Tianfu Wang, Huanshuo Dong +7
LLM-based multi-agent systems (MAS) have emerged as an effective paradigm for complex and long-horizon tasks. However, in real-world tasks, MAS often exhibit various failures durin…
Chip-scale cavity optomechanics in lithium niobate
Wei C. Jiang, Qiang Lin
We develop a chip-scale cavity optomechanical system in single-crystal lithium niobate that exhibits high optical quality factors and a large frequency-quality product as high as $…
Integrated Pockels Laser
Mingxiao Li, Lin Chang, Lue Wu +14
The development of integrated semiconductor lasers has miniaturized traditional bulky laser systems, enabling a wide range of photonic applications. A progression from pure III-V b…
Highly-tunable efficient second-harmonic generation in a lithium niobate nanophotonic waveguide
Rui Luo, Yang He, Hanxiao Liang +2
Highly-tunable coherent light generation is crucial for many important photonic applications. Second-harmonic generation (SHG) is a dominant approach for this purpose, which, howev…
Dispersion engineering of high-Q silicon microresonators via thermal oxidation
Wei C. Jiang, Jidong Zhang, Nicholas G. Usechak +1
We propose and demonstrate a convenient and sensitive technique for precise engineering of group-velocity dispersion in high-Q silicon microresonators. By accurately controlling th…
Chip-scale Simulations in a Quantum-correlated Synthetic Space
Usman A. Javid, Raymond Lopez-Rios, Jingwei Ling +3
An efficient simulator for quantum systems is one of the original goals for the efforts to develop a quantum computer [1]. In recent years, synthetic dimension in photonics [2] hav…
A Simple Optical Analysis of Gravitational Lensing
Xing-Hao Ye, Qiang Lin
We analyzed the influence of static gravitational field on the vacuum and proposed the concept of inhomogeneous vacuum. According to the corresponding Fermat's principle in the gen…
Elliptically polarized laser-pumped magnetometer towards applications at room temperature
Shengran Su, Guoyi Zhang, Xin Bi +3
An atomic magnetometer operated with elliptically polarized light is investigated theoretically and experimentally. To explore the potential of this magnetometric configuration, th…
Echo: Learning from Experience Data via User-Driven Refinement
Hande Dong, Xiaoyun Liang, Jiarui Yu +15
Static "human data" faces inherent limitations: it is expensive to scale and bounded by the knowledge of its creators. Continuous learning from "experience data" - interactions bet…
Tencent WorkBuddy Bench: A Multi-Domain Coding-Agent Benchmark with Contamination-Resistant Task Construction
Tencent WorkBuddy Bench Team, Siqi Cai, Shaopeng Chen +35
We introduce Tencent WorkBuddy Bench, a multi-domain evaluation suite for coding agents; this report documents its construction methodology, scoring protocol, and a cross-model lea…
Pockels Laser Directly Driving Ultrafast Optical Metrology
Shixin Xue, Mingxiao Li, Raymond Lopez-rios +10
The invention of the laser unleashed the potential of optical metrology, leading to numerous advancements in modern science and technology. This reliance on lasers, however, also s…
Selective engineering of cavity resonance for frequency matching in optical parametric processes
Xiyuan Lu, Steven Rogers, Wei C. Jiang +1
We propose to selectively engineer a single cavity resonance to achieve frequency matching for optical parametric processes in high-Q microresonators. For this purpose, we demonstr…
Self-Frequency Shift of Cavity Soliton in Kerr Frequency Comb
Lin Zhang, Qiang Lin, Lionel C. Kimerling +1
We show that the ultrashort cavity soliton in octave-spanning Kerr frequency comb generation exhibits striking self-adaptiveness and robustness to external perturbations, resulting…
Scaling Human-AI Coding Collaboration Requires a Governable Consensus Layer
Tianfu Wang, Zhezheng Hao, Yin Wu +5
Vibe coding produces correct, executable code at speed, but leaves no record of the structural commitments, dependencies, or evidence behind it. Reviewers cannot determine what inv…
A self-starting bi-chromatic LiNbO3 soliton microcomb
Yang HE, Qi-Fan Yang, Jingwei Ling +7
For its many useful properties, including second and third-order optical nonlinearity as well as electro-optic control, lithium niobate is considered an important potential microco…
High-speed tunable microwave-rate soliton microcomb
Yang He, Raymond Lopez-Rios, Usman A. Javid +5
Microwave signal generation with fast frequency tuning underlies many applications including sensing, imaging, ranging, time keeping, wireless communication, and high-speed electro…
High visibility time-energy entangled photons from a silicon nanophotonic chip
Steven Rogers, Daniel Mulkey, Xiyuan Lu +2
Advances in quantum photonics have shown that chip-scale quantum devices are translating from the realm of basic research to applied technologies. Recent developments in integrated…
A microchip optomechanical accelerometer
Alexander G. Krause, Martin Winger, Tim D. Blasius +2
The monitoring of accelerations is essential for a variety of applications ranging from inertial navigation to consumer electronics. The basic operation principle of an acceleromet…
Coherent mixing of mechanical excitations in nano-optomechanical structures
Qiang Lin, Jessie Rosenberg, Darrick Chang +4
The combination of large per-photon optical force and small motional mass attainable in nanocavity optomechanical systems results in strong dynamical back-action between mechanical…
Nonreciprocity in Photon Pair Correlations
Austin Graf, Steven D. Rogers, Jeremy Staffa +3
Nonreciprocal optical systems have found many applications altering the linear transmission of light as a function of its propagation direction. Here we consider a new class of non…
Unified model selection approach based on minimum description length principle in Granger causality analysis
Fei Li, Xuewei Wang, Qiang Lin +1
Granger causality analysis (GCA) provides a powerful tool for uncovering the patterns of brain connectivity mechanism using neuroimaging techniques. Conventional GCA applies two di…
Unleashing the True Potential of LLMs: A Feedback-Triggered Self-Correction with Long-Term Multipath Decoding
Jipeng Li, Zeyu Gao, Yubin Qi +3
Large Language Models (LLMs) have achieved remarkable performance across diverse tasks, yet their susceptibility to generating incorrect content during inference remains a critical…
Electrically empowered microcomb laser
Jingwei Ling, Zhengdong Gao, Shixin Xue +7
Optical frequency comb underpins a wide range of applications from communication, metrology, to sensing. Its development on a chip-scale platform -- so called soliton microcomb --…
LEPO: Latent Reasoning Policy Optimization for Large Language Models
Yuyan Zhou, Jiarui Yu, Hande Dong +4
Recently, latent reasoning has been introduced into large language models (LLMs) to leverage rich information within a continuous space. However, without stochastic sampling, these…
Self-injection-locked second-harmonic integrated source
Jingwei Ling, Jeremy Staffa, Heming Wang +12
High coherence visible and near-visible laser sources are centrally important to the operation of advanced position/navigation/timing systems as well as classical/quantum sensing s…
A Group Key Management Protocol Based on Weight-Balanced 2-3 Tree for Wireless Sensor Networks
Lin Yao, Bing Liu, Feng Xia +2
Multicast in Wireless Sensor Networks (WSNs) is an attractive mechanism for delivering data to multiple receivers as it saves bandwidth. To guarantee the security of multicast, the…
On-chip two-octave supercontinuum generation by enhancing self-steepening of optical pulses
Lin Zhang, Yan Yan, Yang Yue +4
Dramatic advances in supercontinuum generation have been made recently using photonic crystal fibers, but it is quite challenging to obtain an octave-spanning supercontinuum on a c…
Semi-nonlinear nanophotonic waveguides for highly efficient second-harmonic generation
Rui Luo, Yang He, Hanxiao Liang +2
Quadratic optical parametric processes form the foundation for a variety of applications related to classical and quantum frequency conversion, which have attracted significant int…
GAPO: Robust Advantage Estimation for Real-World Code LLMs
Jianqing Zhang, Zhezheng Hao, Wei Xia +7
Reinforcement learning (RL) is widely used for post-training large language models (LLMs) in code editing, where group-relative methods, such as GRPO, are popular due to their crit…
Twin photon pairs in a high-Q silicon microresonator
Steven Rogers, Xiyuan Lu, Wei C. Jiang +1
We report the generation of high-purity twin photon pairs through cavity-enhanced non-degenerate four-wave mixing (FWM) in a high-Q silicon microdisk resonator. Twin photon pairs a…
Photon-level tuning of photonic nanocavities
Mingxiao Li, Hanxiao Liang, Rui Luo +3
Energy-efficient optical control of photonic device properties is crucial for diverse photonic signal processing. Here we demonstrate extremely efficient optical tuning of photonic…
Chirality-dependent electromagnetically induced transparency based on a double semi-periodic helix metastructure
Bo Yan, Fan Gao, Hongfeng Ma +10
A chiral metastructure composed of spatially separated double semi-periodic helices is proposed and investigated theoretically and experimentally in this Letter. Chirality-dependen…
Mechanical oscillation and cooling actuated by the optical gradient force
Qiang Lin, Jessie Rosenberg, Xiaoshun Jiang +2
In this work we combine the large per-photon optical gradient force with the sensitive feedback of a high quality factor whispering-gallery microcavity. The cavity geometry, consis…
Quantum enhancement and Doppler suppression of Kasevich-Chu atom interferometer with motional squeezing states
Dongyang Yu, Yubin Wang, Fong En Oon +1
Hybridization of internal and external atomic degrees of freedom in a Kasevich-Chu interferometer enables the possibility to enhance the sensitivity significantly even under quantu…
Gravitational Lensing Analyzed by Graded Refractive Index of Vacuum
Xing-Hao Ye, Qiang Lin
We found strong similarities between the gravitational lensing and the conventional optical lensing. The similarities imply a graded refractive index description of the light defle…