36 citations · 156 across the 25 of their papers we have counts for
27 papers
Theory of spacetime quantum fault tolerance
Yijia Xu, Yixu Wang, Zi-Wen Liu
We present a unified algebraic theory of Clifford spacetime quantum fault tolerance, which underpins universal fault-tolerant quantum computation. We construct a spacetime chain co…
Coherent error threshold for quantum LDPC codes
Zhengyi Han, Yuanchen Zhao, Yijia Xu +2
A key appeal of quantum low-density parity check (qLDPC) codes is their ability to suppress stochastic Pauli noise below nonzero thresholds. Coherent errors are fundamentally diffe…
LCG: Long-Context Consistent Image Generation with Sparse Relational Attention
Zihao Wang, Yijia Xu, Haoze Zheng +3
Recent image generation models achieve impressive quality in single-image synthesis, but often fail to maintain consistency across sequential outputs, as required in comics, storyb…
MalSkillBench: A Runtime-Verified Benchmark of Malicious Agent Skills
Wenbo Guo, Wei Zeng, Chengwei Liu +5
AI coding agents such as Claude Code and Gemini CLI increasingly extend themselves with third-party skills: markdown packages bundling natural-language instructions, executable scr…
Approximate quantum error correction theory of non-isometric codes
Yixu Wang, Yijia Xu, Zi-Wen Liu
Non-isometric encoding arises in various important contexts in quantum error correction, most notably in the finite-energy, non-ideal codewords inevitable in experimental realizati…
Bosonic Cyclic Codes: Trading Stabilizers for Gaussian Non-Clifford Phase Gates
Owen C. Wetherbee, Yijia Xu, Victor V. Albert +2
Bosonic codes offer hardware-efficient approaches to quantum error correction, with the best encodings offering effective protection of idle quantum information against loss and de…
A framework for low-overhead quantum fault tolerance via spacetime lifting
Yijia Xu, Yixu Wang, Zi-Wen Liu
Fault-tolerant quantum computation is inherently a spacetime problem, requiring not merely good static quantum error-correcting codes but also low-overhead protocols for protecting…
How Effective Are NPM Malicious Package Detectors? A Large-Scale Empirical Study
Wenbo Guo, Zhongwen Chen, Zhengzi Xu +7
The NPM ecosystem faces escalating threats from malicious packages that exploit its open publication model. While numerous detection tools have been proposed, they are evaluated on…
Hierarchical Concept-to-Appearance Guidance for Multi-Subject Image Generation
Yijia Xu, Zihao Wang, Haokun Gui +1
Multi-subject image generation aims to synthesize images that faithfully preserve the identities of multiple reference subjects while following textual instructions. However, exist…
An Efficient Additive Kolmogorov-Arnold Transformer for Point-Level Maize Localization in Unmanned Aerial Vehicle Imagery
Fei Li, Lang Qiao, Jiahao Fan +3
High-resolution UAV photogrammetry has become a key technology for precision agriculture, enabling centimeter-level crop monitoring and point-level plant localization. However, poi…
The Agent Behavior: Model, Governance and Challenges in the AI Digital Age
Qiang Zhang, Pei Yan, Yijia Xu +3
Advancements in AI have led to agents in networked environments increasingly mirroring human behavior, thereby blurring the boundary between artificial and human actors in specific…
Direction-Aware Diagonal Autoregressive Image Generation
Yijia Xu, Jianzhong Ju, Jian Luan +1
The raster-ordered image token sequence exhibits a significant Euclidean distance between index-adjacent tokens at line breaks, making it unsuitable for autoregressive generation.…
A Vision for Auto Research with LLM Agents
Chengwei Liu, Chong Wang, Jiayue Cao +16
This paper introduces Agent-Based Auto Research, a structured multi-agent framework designed to automate, coordinate, and optimize the full lifecycle of scientific research. Levera…
Knowledge-guided machine learning for county-level corn yield prediction under drought
Xiaoyu Wang, Yijia Xu, Jingyi Huang +4
Remote sensing (RS) technique, enabling the non-contact acquisition of extensive ground observations, is a valuable tool for crop yield predictions. Traditional process-based model…
SpearBot: Leveraging Large Language Models in a Generative-Critique Framework for Spear-Phishing Email Generation
Qinglin Qi, Yun Luo, Yijia Xu +2
Large Language Models (LLMs) are increasingly capable, aiding in tasks such as content generation, yet they also pose risks, particularly in generating harmful spear-phishing email…
Letting the tiger out of its cage: bosonic coding without concatenation
Yijia Xu, Yixu Wang, Christophe Vuillot +1
Continuous-variable cat codes are encodings into a single photonic or phononic mode that offer a promising avenue for hardware-efficient fault-tolerant quantum computation. Protect…
Tessellation codes: encoded quantum gates by geometric rotation
Yixu Wang, Yijia Xu, Zi-Wen Liu
We utilize the symmetry groups of regular tessellations on two-dimensional surfaces of different constant curvatures, including spheres, Euclidean planes and hyperbolic planes, to…
Fine-Grained Extraction of Road Networks via Joint Learning of Connectivity and Segmentation
Yijia Xu, Liqiang Zhang, Wuming Zhang +5
Road network extraction from satellite images is widely applicated in intelligent traffic management and autonomous driving fields. The high-resolution remote sensing images contai…
Extracting topological orders of generalized Pauli stabilizer codes in two dimensions
Zijian Liang, Yijia Xu, Joseph T. Iosue +1
In this paper, we introduce an algorithm for extracting topological data from translation invariant generalized Pauli stabilizer codes in two-dimensional systems, focusing on the a…
Learning county from pixels: corn yield prediction with attention-weighted multiple instance learning
Xiaoyu Wang, Yuchi Ma, Qunying Huang +2
Remote sensing technology has become a promising tool in yield prediction. Most prior work employs satellite imagery for county-level corn yield prediction by spatially aggregating…
Clifford operations and homological codes for rotors and oscillators
Yijia Xu, Yixu Wang, Victor V. Albert
We develop quantum information processing primitives for the planar rotor, the state space of a particle on a circle. By interpreting rotor wavefunctions as periodically identified…
Error-correcting codes for fermionic quantum simulation
Yu-An Chen, Alexey V. Gorshkov, Yijia Xu
Utilizing the framework of lattice gauge theories in the context of Pauli stabilizer codes, we present methodologies for simulating fermions via qubit systems on a t…
Qubit-oscillator concatenated codes: decoding formalism & code comparison
Yijia Xu, Yixu Wang, En-Jui Kuo +1
Concatenating bosonic error-correcting codes with qubit codes can substantially boost the error-correcting power of the original qubit codes. It is not clear how to concatenate opt…
Boson Sampling for Generalized Bosons
En-Jui Kuo, Yijia Xu, Dominik Hangleiter +2
We introduce the notion of "generalized bosons" whose exchange statistics resemble those of bosons, but the local bosonic commutator is replaced by an arbitra…