Publications

Papers are listed by release date.

Journal/Conference Papers

• Quantum Multi-Level Estimation of Functionals of Discrete Distributions
  Kean Chen, Minbo Gao, Tongyang Li, Qisheng Wang, Xinzhao Wang
  ICALP 2026
  Released: 2026-05 · [pdf] · [arXiv]

• Strict Hierarchy for Quantum Channel Certification to Unitary
  Kean Chen, Qisheng Wang, Zhicheng Zhang
  ICALP 2026
  Released: 2026-04 · [pdf] · [arXiv]

• Quantum channel tomography: optimal bounds and a Heisenberg-to-classical phase transition
  Kean Chen, Filippo Girardi, Aadil Oufkir, Nengkun Yu, Zhicheng Zhang
  FOCS 2026
  Released: 2026-04 · [pdf] · [arXiv]
  This paper subsumes prior papers [arXiv:2512.13614], [arXiv:2601.04180], [arXiv:2601.10683]

• AlphaSyndrome: Tackling the Syndrome Measurement Circuit Scheduling Problem for QEC Codes
  Yuhao Liu, Shuohao Ping, Junyu Zhou, Ethan Decker, Justin Kalloor, Mathias Weiden, Kean Chen, Yunong Shi, Ali Javadi-Abhari, Costin Iancu, Gushu Li
  ASPLOS 2026
  Released: 2026-01 · [pdf] · [arXiv]

• Approximation does not help in quantum unitary time-reversal
  Kean Chen, Nengkun Yu, Zhicheng Zhang
  STOC 2026
  Released: 2025-07 · [pdf] · [arXiv]

• Simultaneous Estimation of Nonlinear Functionals of a Quantum State
  Kean Chen, Qisheng Wang, Zhan Yu, Zhicheng Zhang
  IEEE T-IT, 2026 & AQIS 2025
  Released: 2025-05 · [pdf] · [arXiv]

• Improved Sample Upper and Lower Bounds for Trace Estimation of Quantum State Powers
  Kean Chen, Qisheng Wang
  COLT 2025
  Released: 2025-05 · [pdf] · [arXiv]

• Verifying Fault-Tolerance of Quantum Error Correction Codes
  Kean Chen, Yuhao Liu, Wang Fang, Jennifer Paykin, Xin-Chuan Wu, Albert Schmitz, Steve Zdancewic, Gushu Li
  CAV 2025
  Released: 2025-01 · [pdf] · [arXiv]

• Local Test for Unitarily Invariant Properties of Bipartite Quantum States
  Kean Chen, Qisheng Wang, Zhicheng Zhang
  IEEE T-IT, 2026
  Released: 2024-04 · [pdf] · [arXiv]

• Spatio-Temporal Point Process for Multiple Object Tracking
  Tao Wang, Kean Chen, Weiyao Lin, John See, Zenghui Zhang, Qian Xu, Xia Jia
  IEEE TNNLS, 2023
  Released: 2023-02 · [pdf] · [arXiv]

• Unitarity Estimation for Quantum Channels
  Kean Chen, Qisheng Wang, Peixun Long, Mingsheng Ying
  IEEE T-IT, 2023
  Released: 2022-12 · [pdf] · [arXiv]

• Automatic Test Pattern Generation for Robust Quantum Circuit Testing
  Kean Chen, Mingsheng Ying
  ACM TODAES, 2024
  Released: 2022-02 · [pdf], · [arXiv]

• End-to-End Video Instance Segmentation via Spatial-Temporal Graph Neural Networks
  Tao Wang, Ning Xu, Kean Chen, Weiyao Lin
  ICCV 2021
  Released: 2021-10 · [pdf] · [arXiv]

• Quantum Algorithm for Fidelity Estimation
  Qisheng Wang, Zhicheng Zhang, Kean Chen, Ji Guan, Wang Fang, Junyi Liu, Mingsheng Ying
  IEEE T-IT, 2023
  Released: 2021-03 · [pdf] · [arXiv]

• AP-Loss for Accurate One-Stage Object Detection
  Kean Chen, Weiyao Lin, Jianguo Li, John See, Ji Wang, Junni Zou
  IEEE T-PAMI, 2021
  Released: 2020-08 · [pdf] · [arXiv]

• PIoU Loss: Towards Accurate Oriented Object Detection in Complex Environments
  Zhiming Chen, Kean Chen, Weiyao Lin, John See, Hui Yu, Yan Ke, Cong Yang
  ECCV 2020
  Released: 2020-07 · [pdf] · [arXiv]

• Towards Accurate One-Stage Object Detection with AP-Loss
  Kean Chen, Jianguo Li, Weiyao Lin, John See, Ji Wang, Lingyu Duan, Zhibo Chen, Changwei He, Junni Zou
  CVPR 2019
  Released: 2019-04 · [pdf], [arXiv]

Manuscripts

• Trace Estimation of Quantum State Powers: Sample Complexity and Computational Hardness
  Kean Chen, Yupan Liu, Qisheng Wang
  arXiv:2505.09563v2, 2026
  Released: 2026-04 · [pdf] · [arXiv]

• TopoLS: Lattice Surgery Compilation via Topological Program Transformations
  Junyu Zhou, Yuhao Liu, Ethan Decker, Justin Kalloor, Mathias Weiden, Kean Chen, Costin Iancu, Gushu Li
  arXiv:2601.23109, 2026
  Released: 2026-01 · [pdf] · [arXiv]

• Optimal lower bound for quantum channel tomography in away-from-boundary regime
  Kean Chen, Zhicheng Zhang, Nengkun Yu
  arXiv:2601.10683, 2026
  Released: 2026-01 · [pdf] · [arXiv]
  This paper is subsumed into [arXiv:2604.17369]

• Quantum channel tomography and estimation by local test
  Kean Chen, Nengkun Yu, Zhicheng Zhang
  arXiv:2512.13614, 2025
  Released: 2025-12 · [pdf] · [arXiv]
  This paper is subsumed into [arXiv:2604.17369]

• A List of Complexity Bounds for Property Testing by Quantum Sample-to-Query Lifting
  Kean Chen, Qisheng Wang, Zhicheng Zhang
  arXiv:2512.01971, 2025
  Released: 2025-12 · [pdf] · [arXiv]

• Inverse-free quantum state estimation with Heisenberg scaling
  Kean Chen
  arXiv:2510.25750, 2025
  Released: 2025-10 · [pdf] · [arXiv]

• VeriQBench: A Benchmark for Multiple Types of Quantum Circuits
  Kean Chen, Wang Fang, Ji Guan, Xin Hong, Mingyu Huang, Junyi Liu, Qisheng Wang, Mingsheng Ying
  arXiv:2206.10880, 2022
  Released: 2022-06 · [pdf] · [arXiv]