Publications (181)
Dynamics of interacting qubits coupled to a common bath: Non-Markovian quantum state diffusion approach
Xinyu Zhao, Jun Jing, Brittany Corn +1
Non-Markovian dynamics is studied for two interacting quibts strongly coupled to a dissipative bosonic environment. For the first time, we have derived the non-Markovian quantum st…
Schwarz lemma for harmonic functions in the unit ball
Zhenghua Xu, Ting Yu, Qinghai Huo
Recently, it is proven that positive harmonic functions defined in the unit disc or the upper half-plane in are contractions in hyperbolic metrics \cite{Markovic}. Fur…
Learning Non-Markovian Noise via Ensemble Optimal Control
Da-Wei Luo, Ting Yu
We study the estimation of parameters pertaining to non-Markovian quantum open systems, such as the dissipation rate and environmental memory time. A key challenge is identifying t…
Asymptotic behaviors for distribution dependent SDEs driven by fractional Brownian motions
Xiliang Fan, Ting Yu, Chenggui Yuan
In this paper, we study small-time asymptotic behaviors for a class of distribution dependent stochastic differential equations driven by fractional Brownian motions with Hurst par…
Polariton-mediated binding of anti-aligned dipolar excitons
Haifeng Kang, Quanbing Guo, Tianyi Zhou +7
Interacting bosonic quasiparticles are the cornerstone for exploring many-body physics and nonlinear quantum phenomena in correlated light-matter systems. Strongly interacting dipo…
A study of 80 known pulsars at 185 MHz using MWA incoherent drift-scan observations
Ting Yu, Hongyu Gong, Zhifu Gao +4
A systematic study of 80 known pulsars observed at 185 MHz has been conducted using archival incoherent-sum data from the Murchison Widefield Array (MWA). The dataset comprises 48…
Stacking Dependent Optical Conductivity of Bilayer Graphene
Yingying Wang, Zhenhua Ni, Lei Liu +6
The optical conductivities of graphene layers are strongly dependent on their stacking orders. Our first-principle calculations show that while the optical conductivities of single…
Time-reversal assisted quantum metrology with an optimal control
Da-Wei Luo, Ting Yu
We propose a protocol to overcome the shot noise limit and reach the Heisenberg scaling limit for parameter estimation by using quantum optimal control and a time-reversal strategy…
Wafer-scale graphene/ferroelectric hybrid devices for low-voltage electronics
Yi Zheng, Guang-Xin Ni, Sukang Bae +9
Preparing graphene and its derivatives on functional substrates may open enormous opportunities for exploring the intrinsic electronic properties and new functionalities of graphen…
The Weighted estimates for the fractional Hardy operator and a class of integral operators on the Heisenberg group
Tianyang He, Zhiwen Liu, Ting Yu
In the setting of a Heisenberg group, we first studied the sharp weak estimate for the -dimensional fractional Hardy operator from to . Next, we studied the…
All-Chalcogenide Programmable All-Optical Deep Neural Networks
Ting Yu, Xiaoxuan Ma, Ernest Pastor +5
Deeplearning algorithms are revolutionising many aspects of modern life. Typically, they are implemented in CMOS-based hardware with severely limited memory access times and ineffi…
Negative Entanglement Measure, and What It Implies
Ting Yu, J. H. Eberly
In this paper, we extract from concurrence its variable part, denoted , and use as a time-dependent measure of "distance", either postive or negative, from the separabilit…
Geometric signature of non-Markovian dynamics
Da-Wei Luo, Ting Yu
Non-Markovian effects in the dynamics of an open system are typically characterized by non-monotonic information flows from the system to its environment or by information backflow…
Fermionic Stochastic Schrödinger Equation and Master Equation: An Open System Model
Xinyu Zhao, Wufu Shi, Lian-Ao Wu +1
This paper considers the extension of the non-Markovian stochastic approach for quantum open systems strongly coupled to a fermionic bath, to the models in which the system operato…
Spontaneous Enhancement of Dzyaloshinskii-Moriya Interaction via Field-Cooling-Induced Interface Engineering in 2D van der Waals Ferromagnetic ternary Tellurides
Shian Xia, Yan Luo, Iftikhar Ahmed Malik +11
The emergence of two-dimensional (2D) van der Waals (vdW) ferromagnets has opened new avenues for exploring topological spin textures and their applications in next-generation spin…
Magnetic Oscillation of Optical Phonon in ABA- and ABC-Stacked Trilayer Graphene
Chunxiao Cong, Jeil Jung, Bingchen Cao +5
We present a comparative measurement of the G-peak oscillations of phonon frequency, Raman intensity and linewidth in the Magneto-Raman scattering of optical E2g phonons in mechani…
Efficient Multi-Slide Visual-Language Feature Fusion for Placental Disease Classification
Hang Guo, Qing Zhang, Zixuan Gao +6
Accurate prediction of placental diseases via whole slide images (WSIs) is critical for preventing severe maternal and fetal complications. However, WSI analysis presents significa…
Evolution from Entanglement to Decoherence of Bipartite Mixed "X" States
Ting Yu, J. H. Eberly
We examine a class of bipartite mixed states which we call X states and report several analytic results related to the occurrence of so-called entanglement sudden death (ESD) under…
Non-Markovian quantum interference in multilevel quantum systems: Exact master equation approach
Yusui Chen, J. Q. You, Ting Yu
We study the non-Markovian quantum interference phenomenon of a multi-state atomic system coupled to a bosonic dissipative environment by using the exact master equations derived i…
Exact non-Markovian master equations for multiple qubit systems: quantum trajectory approach
Yusui Chen, J. Q. You, Ting Yu
A wide class of exact master equations for a multiple qubit system can be explicitly constructed by using the corresponding exact non-Markovian quantum state diffusion equations. T…
Solving non-Markovian open quantum systems with multi-channel reservoir coupling
Curtis J. Broadbent, Jun Jing, Ting Yu +1
We extend the non-Markovian quantum state diffusion (QSD) equation to open quantum systems which exhibit multi-channel coupling to a harmonic oscillator reservoir. Open quantum sys…
Generalized Coherent States, Reproducing Kernels, and Quantum Support Vector Machines
Rupak Chatterjee, Ting Yu
The support vector machine (SVM) is a popular machine learning classification method which produces a nonlinear decision boundary in a feature space by constructing linear boundari…
Control relaxation via dephasing: an exact quantum state diffusion study
Jun Jing, Ting Yu, Chi-Hang Lam +2
Dynamical decoupling as a quantum control strategy aims at suppressing quantum decoherence adopting the popular philosophy that the disorder in the unitary evolution of the open qu…
Silane-Catalyzed Fast Growth of Large Single-Crystalline Graphene on Hexagonal Boron Nitride
Shujie Tang, Haomin Wang, Hui Shan Wang +12
The direct growth of high-quality, large single-crystalline domains of graphene on a dielectric substrate is of vital importance for applications in electronics and optoelectronics…
MANTIS: Detection of Zero-Day Malicious Domains Leveraging Low Reputed Hosting Infrastructure
Fatih Deniz, Mohamed Nabeel, Ting Yu +1
Internet miscreants increasingly utilize short-lived disposable domains to launch various attacks. Existing detection mechanisms are either too late to catch such malicious domains…
GIDN: A Lightweight Graph Inception Diffusion Network for High-efficient Link Prediction
Zixiao Wang, Yuluo Guo, Jin Zhao +5
In this paper, we propose a Graph Inception Diffusion Networks(GIDN) model. This model generalizes graph diffusion in different feature spaces, and uses the inception module to avo…
Direct Observation of Inner and Outer G' Band Double-resonance Raman Scattering in Free Standing Graphene
Zhiqiang Luo, Chunxiao Cong, Jun Zhang +2
In contrary to the widely reported single and symmetric peak feature of G' (or 2D) band in Raman spectrum of graphene, we herein report the observation of splitting in G' band in f…
G band Raman double resonance in twisted bilayer graphene: an evidence of band splitting and folding
Zhenhua Ni, Lei Liu, Yingying Wang +4
The stacking faults (deviates from Bernal) will break the translational symmetry of multilayer graphenes and modify their electronic and optical behaviors to the extent depending o…
Raman spectroscopy and imaging of graphene
Zhen hua Ni, Ying ying Wang, Ting Yu +1
Graphene has many unique properties that make it an ideal material for fundamental studies as well as for potential applications. Here we review the recent results on the Raman spe…
Higher-order solutions to non-Markovian quantum dynamics via hierarchical functional derivative
Da-Wei Luo, Chi-Hang Lam, Lian-Ao Wu +3
Solving realistic quantum systems coupled to an environment is a challenging task. Here we develop a hierarchical functional derivative (HFD) approach for efficiently solving the n…
Image Prompt Reconstruction Attacks on Distributed MLLM Inference Frameworks
Xinjian Luo, Hongyan Chang, Jianxin Wei +5
Distributed large language model (LLM) inference frameworks connect isolated consumer-grade devices for large-scale model inference, substantially reducing hardware constraints. Ho…
Obtaining Information about Queries behind Views and Dependencies
Rada Chirkova, Ting Yu
We consider the problems of finding and determining certain query answers and of determining containment between queries; each problem is formulated in presence of materialized vie…
On Exploring Undetermined Relationships for Visual Relationship Detection
Yibing Zhan, Jun Yu, Ting Yu +1
In visual relationship detection, human-notated relationships can be regarded as determinate relationships. However, there are still large amount of unlabeled data, such as object…
Spin-canting-induced Giant Nonlinear Optical Magnetochirality in a 2D Ferrotoroid
Shian Xia, Sheng Liu, Wenhe Jia +9
The paper demonstrates giant nonlinear optical magnetochirality in bilayer CrSBr, where a field‑induced spin‑canting breaks PT symmetry and enables magnetically switchable circular…
A Comprehensive Survey of 3D Dense Captioning: Localizing and Describing Objects in 3D Scenes
Ting Yu, Xiaojun Lin, Shuhui Wang +3
Three-Dimensional (3D) dense captioning is an emerging vision-language bridging task that aims to generate multiple detailed and accurate descriptions for 3D scenes. It presents si…
10-W Sub-100-fs Ultrafast Cr:ZnS/ZnSe MOPA System enabled by doping gradient engineering
Guangzi Feng, Xiyue Zhang, Yuchen Wang +9
We report on a high-power mid-infrared femtosecond master oscillator power amplifier (MOPA) system, employing Cr:ZnS and Cr:ZnSe polycrystals with fine-tuned doping profiles. Based…
Gold on graphene as a substrate for surface enhanced Raman scattering study
Yingying Wang, Zhenhua Ni, Hailong Hu +5
In this paper, we report our study on gold (Au) films with different thicknesses deposited on single layer graphene (SLG) as surface enhanced Raman scattering (SERS) substrates for…
DeBackdoor: A Deductive Framework for Detecting Backdoor Attacks on Deep Models with Limited Data
Dorde Popovic, Amin Sadeghi, Ting Yu +2
Backdoor attacks are among the most effective, practical, and stealthy attacks in deep learning. In this paper, we consider a practical scenario where a developer obtains a deep mo…
Extracting work from the magnetic field coupled Brownian particles
Tian Chen, Xiang-Bin Wang, Ting Yu
Thermodynamics of the magnetic field coupled Brownian particles is studied. We show that in the presence of the magnetic field, work can be extracted from the reservoir even when t…
Optically-mediated remote entanglement generation in magnon-cavity systems
Da-Wei Luo, Xiao-Feng Qian, Ting Yu
We study the remote entanglement generation between macroscopic microwave magnon modes in a coupled cavity system. The cavities are connected via an optical fiber, which necessitat…
Reduction of Fermi velocity in folded graphene observed by resonance Raman spectroscopy
Zhenhua Ni, Yingying Wang, Ting Yu +2
The 1+1 layer folded graphene sheets that deviate from AB stacking are successfully fabricated and their electronic structures are investigated by Raman spectroscopy. Significant b…
Comment on "Raman spectra of misoriented bilayer graphene"
Zhenhua Ni, Yingying Wang, Ting Yu +2
In a recent paper [Phys. Rev. B 78, 113407 (2008)], Poncharal et al. studied the Raman spectra of misoriented bilayer graphene. They found that the blueshift of 2D band of misorien…
Non-Markovian Relaxation of a Three-Level System: Quantum Trajectory Approach
Jun Jing, Ting Yu
The non-Markovian dynamics of a three-level quantum system coupled to a bosonic environment is a difficult problem due to the lack of an exact dynamic equation such as a master equ…
Modular Operators and Entanglement in Supersymmetric Quantum Mechanics
Rupak Chatterjee, Ting Yu
The modular operator approach of Tomita-Takesaki to von Neumann algebras is elucidated in the algebraic structure of certain supersymmetric quantum mechanical systems. A von Neuman…
DeviceWatch: Identifying Compromised Mobile Devices through Network Traffic Analysis and Graph Inference
Euijin Choo, Mohamed Nabeel, Mashael Alsabah +3
In this paper, we propose to identify compromised mobile devices from a network administrator's point of view. Intuitively, inadvertent users (and thus their devices) who download…
Qubit Entanglement Dephasing Dynamics Driven by a Bath of Spins
Jie Xu, Jun Jing, Ting Yu
We study the entanglement dynamics for a two-spin system coupled to a spin environment of different configurations by z-x type interaction. The models considered in this paper are…
Sudden Death of Entanglement
Ting Yu, J. H. Eberly
A new development in the dynamical behavior of elementary quantum systems is the surprising discovery that correlation between two quantum units of information called qubits can be…
Memory-induced geometric phase in non-Markovian open systems
Da-Wei Luo, J. Q. You, Hai-Qing Lin +2
Geometric phases have been shown to be feasible in implementing quantum gates to perform quantum information processing. For all the realistic applications, the environmental influ…
From Text to Actionable Intelligence: Automating STIX Entity and Relationship Extraction
Ahmed Lekssays, Husrev Taha Sencar, Ting Yu
Sharing methods of attack and their effectiveness is a cornerstone of building robust defensive systems. Threat analysis reports, produced by various individuals and organizations,…
Terahertz conductivity of twisted bilayer graphene
Xingquan Zou, Jingzhi Shang, Jianing Leaw +11
Using terahertz time-domain spectroscopy, the real part of optical conductivity [] of twisted bilayer graphene was obtained at different temperatures (10 -- 300 K) in t…
Non-Markovian Dynamics of Quantum Open Systems Embedded in a Hybrid Environment
Xinyu Zhao, Wufu Shi, J. Q. You +1
Quantum systems of interest are typically coupled to several quantum channels (more generally environments). In this paper, we develop an exact stochastic Schrödinger equation for…
Strain Induced Robust Skyrmion lattice at Room Temperature in van der Waals Ferromagnet
Xinyi Zhou, Iftikhar Ahmed Malik, Ruihuan Duan +14
Manipulating topological magnetic orders of two-dimensional (2D) magnets by strain, once achieved, offers enormous potential for future low-power flexible spintronic applications.…
Discrete Phase Space, Relativistic Quantum Electrodynamics, and a Non-Singular Coulomb Potential
Anadijiban Das, Rupak Chatterjee, Ting Yu
This paper deals with the relativistic, quantized electromagnetic and Dirac field equations in the arena of discrete phase space and continuous time. The mathematical formulation i…
Measurement Back Action on Qubit Systems by a Cavity Probe
Yusui Chen, Wufu Shi, Debing Zeng +1
We study the back action on a coupled multiple-qubit system induced by a quantum cavity probe in a non-demolition quantum measurement scheme. The exact quantum state stochastic Sch…
Fault-tolerant breathing pattern in optical lattices as a dynamical quantum memory
Zhao-Ming Wang, Lian-Ao Wu, Michele Modugno +3
Proposals for quantum information processing often require the development of new quantum tech- nologies. However, here we build quantum memory by ultracold atoms in one-dimensiona…
Quantum Fisher Information and the Curvature of Entanglement
Zain H. Saleem, Anil Shaji, Anjala M Babu +4
We explore the relationship between quantum Fisher information (QFI) and the negative of the second derivative of concurrence with respect to the coupling between two qubits, refer…
High-dimensional temporal mode propagation in a turbulent environment
Quanzhen Ding, Rupak Chatterjee, Yuping Huang +1
Temporal modes of photonic quantum states provide a new framework to develop a robust free-space quantum key distribution (QKD) scheme in a maritime environment. We show that the h…
A Survey on Contact Tracing: the Latest Advancements and Challenges
Ting Jiang, Yang Zhang, Minhao Zhang +7
Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi, which can be spread, directly or indirectly, from one person to another.…
ActivityNet-QA: A Dataset for Understanding Complex Web Videos via Question Answering
Zhou Yu, Dejing Xu, Jun Yu +4
Recent developments in modeling language and vision have been successfully applied to image question answering. It is both crucial and natural to extend this research direction to…
Non-Markovian Fermionic Stochastic Schrödinger Equation for Open System Dynamics
Wufu Shi, Xinyu Zhao, Ting Yu
In this paper we present an exact Grassmann stochastic Schrödinger equation for the dynamics of an open fermionic quantum system coupled to a reservoir consisting of a finite or i…
Tunneling-induced transparency and Autler-Townes splitting in a triple quantum dot
Xiao-Qing Luo, Zeng-Zhao Li, Jun Jing +3
We theoretically investigate the tunneling-induced transparency (TIT) and the Autler-Townes (AT) doublet and triplet in a triple-quantum-dot system. For the resonant tunneling case…
Nonperturbative stochastic dynamics driven by strongly correlated colored noises
Jun Jing, Rui Li, J. Q. You +1
We establish for the first time an exact stochastic dynamical equation for an open quantum systems coupled to correlated noises. We rigorously investigate the nonequilibrium dynami…
A Large Scale Study and Classification of VirusTotal Reports on Phishing and Malware URLs
Euijin Choo, Mohamed Nabeel, Ravindu De Silva +2
VirusTotal (VT) provides aggregated threat intelligence on various entities including URLs, IP addresses, and binaries. It is widely used by researchers and practitioners to collec…
Nonperturbative Leakage Elimination Operators and Control of a Three-Level System
Jun Jing, Lian-Ao Wu, Mark Byrd +3
Dynamical decoupling operations have been shown to reduce errors in quantum information processing. Leakage from an encoded subspace to the rest of the system space is a particular…
Dark state with counter-rotating dissipative channels
Zheng-yang Zhou, Mi Chen, Lian-Ao Wu +2
Dark state as a consequence of interference between different quantum states has great importance in the fields of chip-scale atomic clock and quantum information. For the -typ…
Prompt Inference Attack on Distributed Large Language Model Inference Frameworks
Xinjian Luo, Ting Yu, Xiaokui Xiao
The inference process of modern large language models (LLMs) demands prohibitive computational resources, rendering them infeasible for deployment on consumer-grade devices. To add…
Gemini 2.5: Pushing the Frontier with Advanced Reasoning, Multimodality, Long Context, and Next Generation Agentic Capabilities
Gheorghe Comanici, Eric Bieber, Mike Schaekermann +3431
In this report, we introduce the Gemini 2.X model family: Gemini 2.5 Pro and Gemini 2.5 Flash, as well as our earlier Gemini 2.0 Flash and Flash-Lite models. Gemini 2.5 Pro is our…
LLMxCPG: Context-Aware Vulnerability Detection Through Code Property Graph-Guided Large Language Models
Ahmed Lekssays, Hamza Mouhcine, Khang Tran +2
Software vulnerabilities present a persistent security challenge, with over 25,000 new vulnerabilities reported in the Common Vulnerabilities and Exposures (CVE) database in 2024 a…
Sudden Death of Entanglement: Classical Noise Effects
Ting Yu, J. H. Eberly
When a composite quantum state interacts with its surroundings, both quantum coherence of individual particles and quantum entanglement will decay. We have shown that under vacuum…
A Survey on Malicious Domains Detection through DNS Data Analysis
Yury Zhauniarovich, Issa Khalil, Ting Yu +1
Malicious domains are one of the major resources required for adversaries to run attacks over the Internet. Due to the important role of the Domain Name System (DNS), extensive res…
Resonant Low Frequency Interlayer Shear Modes in Folded Graphene Layers
Chunxiao Cong, Ting Yu
Naturally or artificially stacking extra layers on single layer graphene (SLG) forms few-layer graphene (FLG), which has attracted tremendous attention owing to its exceptional pro…
Environment-Assisted Quantum State Restoration Via Weak Measurement
Kelvin Wang, Xinyu Zhao, Ting Yu
In this paper, a new quantum state restoration scheme is proposed based on the environment-assisted error correction (EAEC) scheme. By introducing a weak measurement reversal (WMR)…
Perturbation Methods for Non-Markovian Quantum State Diffusion Equation
Jie Xu, Xinyu Zhao, Jun Jing +2
Two perturbation methods for the non-Markovian quantum state diffusion (NMQSD) equation are investigated. The first perturbation method under investigation is based on a functional…
Ultrafast carrier dynamics in pristine and FeCl3-intercalated bilayer graphene
Xingquan Zou, Da Zhan, Xiaofeng Fan +9
Ultrafast carrier dynamics of pristine bilayer graphene (BLG) and bilayer graphene intercalated with FeCl3 (FeCl3-G), were studied using time-resolved transient differential reflec…
Non-Markovian Quantum Trajectories Versus Master Equations: Finite Temperature Heat Bath
Ting Yu
The interrelationship between the non-Markovian stochastic Schrödinger equations and the corresponding non-Markovian master equations is investigated in the finite temperature reg…
Synthesis and optical properties of large-scale single-crystalline two-dimensional semiconductor WS2 monolayer from chemical vapor deposition
Chunxiao Cong, Jingzhi Shang, Xing Wu +5
Two-dimensional (2D) transition metal dichalcogenides (TMDs), especially MoS2 and WS2 recently attract extensive attentions due to their rich physics and great potential applicatio…
Entanglement Dynamics of Separable Squeezed States in Finite Memory Structured Reservoir
Austen Couvertier, Ting Yu
Entanglement in continuous-variable Gaussian systems is a key resource, and common reservoirs can both suppress and generate correlations. Existing work focused on pre-entangled st…
Room temperature nanocavity laser with interlayer excitons in 2D heterostructures
Yuanda Liu, Hanlin Fang, Abdullah Rasmita +7
Atomically thin layered two dimensional (2D) material has provided a rich library for both fundamental research and device applications. One of the special advantages is that, band…
Electronic Structure and Structural Evolutions of Hydrogenated Graphene Probed by Raman Spectroscopy
Zhiqiang Luo, Ting Yu, Zhenhua Ni +6
The electronic structure and structural evolution of hydrogenated graphene are investigated by Raman spectroscopy with multiple excitations. The excitation energy dependent saturat…
Ten Years after ImageNet: A 360° Perspective on AI
Sanjay Chawla, Preslav Nakov, Ahmed Ali +7
It is ten years since neural networks made their spectacular comeback. Prompted by this anniversary, we take a holistic perspective on Artificial Intelligence (AI). Supervised Lear…
Convolutionless Non-Markovian master equations and quantum trajectories: Brownian motion revisited
Walter T. Strunz, Ting Yu
Stochastic Schr{ö}dinger equations for quantum trajectories offer an alternative and sometimes superior approach to the study of open quantum system dynamics. Here we show that re…
Detector-induced backaction on the counting statistics of a double quantum dot
Zeng-Zhao Li, Chi-Hang Lam, Ting Yu +1
Full counting statistics of electron transport is of fundamental importance for a deeper understanding of the underlying physical processes in quantum transport in nanoscale device…
Entanglement Decay Versus Energy Change: A Model
Ting Yu
We present a simple quantum open system to show quantitatively how entanglement decoherence is related to the energy transfer between the system of interest and its environment. Pa…
Security Analysis of EOSIO Smart Contracts
Ningyu He, Ruiyi Zhang, Lei Wu +5
The EOSIO blockchain, one of the representative Delegated Proof-of-Stake (DPoS) blockchain platforms, has grown rapidly recently. Meanwhile, a number of vulnerabilities and high-pr…
Quantum synchronization via Active-Passive-Decomposition configuration: An open quantum system study
Nan Yang, Ting Yu
In this paper, we study the synchronization of dissipative quantum harmonic oscillators in the framework of quantum open system via the Active-Passive Decomposition (APD) configura…
Geometric decoherence in diffusive open quantum systems
Da-Wei Luo, Hai-Qing Lin, J. Q. You +3
Based on a generic quantum open system model, we study the geometric nature of decoherence by defining a complex-valued geometric phase through stochastic pure states describing no…
Two-component Dirac equation
Da-Wei Luo, P. V. Pyshkin, Ting Yu +3
We provide an alternative approach to relativistic dynamics based on the Feshbach projection technique. Instead of directly studying the Dirac equation, we derive a two-component e…
Mining Frequent Graph Patterns with Differential Privacy
Entong Shen, Ting Yu
Discovering frequent graph patterns in a graph database offers valuable information in a variety of applications. However, if the graph dataset contains sensitive data of individua…
Multi-granularity Contrastive Cross-modal Collaborative Generation for End-to-End Long-term Video Question Answering
Ting Yu, Kunhao Fu, Jian Zhang +2
Long-term Video Question Answering (VideoQA) is a challenging vision-and-language bridging task focusing on semantic understanding of untrimmed long-term videos and diverse free-fo…
Nonlocal magnon entanglement generation in coupled hybrid cavity systems
Da-Wei Luo, Xiao-Feng Qian, Ting Yu
We investigate dynamical generation of macroscopic nonlocal entanglements between two remote massive magnon-superconducting-circuit hybrid systems. Two fiber-coupled microwave cavi…
Spin light-emitting devices in a 2D magnet
Fanglu Qin, Haiyang Liu, Aosai Yang +12
Emerging two-dimensional (2D) magnetic semiconductors represent transformative platforms to explore magneto-optics and opto-spintronic applications. Though 2D opto-spintronics has…
Uniaxial strain on graphene: Raman spectroscopy study and bandgap opening
Zhen Hua Ni, Ting Yu, Yun Hao Lu +3
Graphene was deposited on a transparent and flexible substrate and tensile strain up to ~0.8% was loaded by stretching the substrate in one direction. Raman spectra of strained gra…
Exact coherence dynamics mediated by a single cavity mode in the presence of leakage
Yusui Chen, Quanzhen Ding, Wufu Shi +2
We present a quantum-state-diffusion equation to characterize the dynamics of a generic atomic system coupled to a leaky cavity mode. As quantum resources, the population, the cohe…
Decoherence and Localization in Quantum Two-Level Systems
Ting Yu
We study and compare the decoherent histories approach, the environment-induced decoherence and the localization properties of thesolutions to the stochastic Schrödinger equation…
Entanglement sudden birth of two trapped ions interacting with a time-dependent laser field
Mahmoud Abdel-Aty, Ting Yu
We explore and develop the mathematics of the two multi-level ions. In particular, we describe some new features of quantum entanglement in two three-level trapped ions confined in…
Optimal entanglement generation in optomechanical systems via Krotov control of covariance matrix dynamics
Pengju Chen, Da-Wei Luo, Ting Yu
We investigated the optimal control of a continuous variable system, focusing on entanglement generation in an optomechanical system without utilizing Fock basis cutoffs. Using the…
Probing charged impurities in suspended graphene using Raman spectroscopy
Zhen Hua Ni, Ting Yu, Zhi Qiang Luo +6
Charged impurity (CI) scattering is one of the dominant factors that affect the carrier mobility in graphene. In this paper, we use Raman spectroscopy to probe the charged impuriti…
Direct photoluminescence probing of ferromagnetism in monolayer two-dimensional CrBr3
Zhaowei Zhang, Jingzhi Shang, Chongyun Jiang +3
Atomically thin magnets are the key element to build up spintronics based on two-dimensional materials. The surface nature of two-dimensional ferromagnet opens up opportunities to…
Beta-Ag2Te: A topological insulator with strong anisotropy
Azat Sulaev, Peng Ren, Bin Xia +12
We present evidence of topological surface states in beta-Ag2Te through first-principles calculations and periodic quantum interference effect in single crystalline nanoribbon. Our…
TPMDP: Threshold Personalized Multi-party Differential Privacy via Optimal Gaussian Mechanism
Jiandong Liu, Lan Zhang, Chaojie Lv +3
In modern distributed computing applications, such as federated learning and AIoT systems, protecting privacy is crucial to prevent adversarial parties from colluding to steal othe…